644316400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:640

約数の個数: 240

約数和(自身を含む): 1970096128

約数和(自身を除く): 1325779728

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 31, 35, 40, 50, 52, 56, 62, 65, 70, 80, 91, 100, 104, 112, 124, 130, 140, 155, 175, 182, 200, 208, 217, 248, 260, 280, 310, 325, 350, 364, 400, 403, 434, 455, 496, 520, 560, 571, 620, 650, 700, 728, 775, 806, 868, 910, 1040, 1085, 1142, 1240, 1300, 1400, 1456, 1550, 1612, 1736, 1820, 2015, 2170, 2275, 2284, 2480, 2600, 2800, 2821, 2855, 3100, 3224, 3472, 3640, 3997, 4030, 4340, 4550, 4568, 5200, 5425, 5642, 5710, 6200, 6448, 7280, 7423, 7994, 8060, 8680, 9100, 9136, 10075, 10850, 11284, 11420, 12400, 14105, 14275, 14846, 15988, 16120, 17360, 17701, 18200, 19985, 20150, 21700, 22568, 22840, 28210, 28550, 29692, 31976, 32240, 35402, 36400, 37115, 39970, 40300, 43400, 45136, 45680, 51961, 56420, 57100, 59384, 63952, 70525, 70804, 74230, 79940, 80600, 86800, 88505, 99925, 103922, 112840, 114200, 118768, 123907, 141050, 141608, 148460, 159880, 161200, 177010, 185575, 199850, 207844, 225680, 228400, 230113, 247814, 259805, 282100, 283216, 296920, 319760, 354020, 371150, 399700, 415688, 442525, 460226, 495628, 519610, 564200, 593840, 619535, 708040, 742300, 799400, 831376, 885050, 920452, 991256, 1039220, 1128400, 1150565, 1239070, 1299025, 1416080, 1484600, 1598800, 1610791, 1770100, 1840904, 1982512, 2078440, 2301130, 2478140, 2598050, 2969200, 3097675, 3221582, 3540200, 3681808, 4156880, 4602260, 4956280, 5196100, 5752825, 6195350, 6443164, 7080400, 8053955, 9204520, 9912560, 10392200, 11505650, 12390700, 12886328, 16107910, 18409040, 20784400, 23011300, 24781400, 25772656, 32215820, 40269775, 46022600, 49562800, 64431640, 80539550, 92045200, 128863280, 161079100, 322158200, 644316400]

約数ペア:

[(1, 644316400), (2, 322158200), (4, 161079100), (5, 128863280), (7, 92045200), (8, 80539550), (10, 64431640), (13, 49562800), (14, 46022600), (16, 40269775), (20, 32215820), (25, 25772656), (26, 24781400), (28, 23011300), (31, 20784400), (35, 18409040), (40, 16107910), (50, 12886328), (52, 12390700), (56, 11505650), (62, 10392200), (65, 9912560), (70, 9204520), (80, 8053955), (91, 7080400), (100, 6443164), (104, 6195350), (112, 5752825), (124, 5196100), (130, 4956280), (140, 4602260), (155, 4156880), (175, 3681808), (182, 3540200), (200, 3221582), (208, 3097675), (217, 2969200), (248, 2598050), (260, 2478140), (280, 2301130), (310, 2078440), (325, 1982512), (350, 1840904), (364, 1770100), (400, 1610791), (403, 1598800), (434, 1484600), (455, 1416080), (496, 1299025), (520, 1239070), (560, 1150565), (571, 1128400), (620, 1039220), (650, 991256), (700, 920452), (728, 885050), (775, 831376), (806, 799400), (868, 742300), (910, 708040), (1040, 619535), (1085, 593840), (1142, 564200), (1240, 519610), (1300, 495628), (1400, 460226), (1456, 442525), (1550, 415688), (1612, 399700), (1736, 371150), (1820, 354020), (2015, 319760), (2170, 296920), (2275, 283216), (2284, 282100), (2480, 259805), (2600, 247814), (2800, 230113), (2821, 228400), (2855, 225680), (3100, 207844), (3224, 199850), (3472, 185575), (3640, 177010), (3997, 161200), (4030, 159880), (4340, 148460), (4550, 141608), (4568, 141050), (5200, 123907), (5425, 118768), (5642, 114200), (5710, 112840), (6200, 103922), (6448, 99925), (7280, 88505), (7423, 86800), (7994, 80600), (8060, 79940), (8680, 74230), (9100, 70804), (9136, 70525), (10075, 63952), (10850, 59384), (11284, 57100), (11420, 56420), (12400, 51961), (14105, 45680), (14275, 45136), (14846, 43400), (15988, 40300), (16120, 39970), (17360, 37115), (17701, 36400), (18200, 35402), (19985, 32240), (20150, 31976), (21700, 29692), (22568, 28550), (22840, 28210)]