20939100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1$

素因数の和:109

約数の個数: 216

約数和(自身を含む): 76245120

約数和(自身を除く): 55306020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 25, 26, 28, 30, 35, 39, 42, 50, 52, 59, 60, 65, 70, 75, 78, 84, 91, 100, 105, 118, 130, 140, 150, 156, 169, 175, 177, 182, 195, 210, 236, 260, 273, 295, 300, 325, 338, 350, 354, 364, 390, 413, 420, 455, 507, 525, 546, 590, 650, 676, 700, 708, 767, 780, 826, 845, 885, 910, 975, 1014, 1050, 1092, 1180, 1183, 1239, 1300, 1365, 1475, 1534, 1652, 1690, 1770, 1820, 1950, 2028, 2065, 2100, 2275, 2301, 2366, 2478, 2535, 2730, 2950, 3068, 3380, 3540, 3549, 3835, 3900, 4130, 4225, 4425, 4550, 4602, 4732, 4956, 5070, 5369, 5460, 5900, 5915, 6195, 6825, 7098, 7670, 8260, 8450, 8850, 9100, 9204, 9971, 10140, 10325, 10738, 11505, 11830, 12390, 12675, 13650, 14196, 15340, 16107, 16900, 17700, 17745, 19175, 19942, 20650, 21476, 23010, 23660, 24780, 25350, 26845, 27300, 29575, 29913, 30975, 32214, 35490, 38350, 39884, 41300, 46020, 49855, 50700, 53690, 57525, 59150, 59826, 61950, 64428, 69797, 70980, 76700, 80535, 88725, 99710, 107380, 115050, 118300, 119652, 123900, 134225, 139594, 149565, 161070, 177450, 199420, 209391, 230100, 249275, 268450, 279188, 299130, 322140, 348985, 354900, 402675, 418782, 498550, 536900, 598260, 697970, 747825, 805350, 837564, 997100, 1046955, 1395940, 1495650, 1610700, 1744925, 2093910, 2991300, 3489850, 4187820, 5234775, 6979700, 10469550, 20939100]

約数ペア:

[(1, 20939100), (2, 10469550), (3, 6979700), (4, 5234775), (5, 4187820), (6, 3489850), (7, 2991300), (10, 2093910), (12, 1744925), (13, 1610700), (14, 1495650), (15, 1395940), (20, 1046955), (21, 997100), (25, 837564), (26, 805350), (28, 747825), (30, 697970), (35, 598260), (39, 536900), (42, 498550), (50, 418782), (52, 402675), (59, 354900), (60, 348985), (65, 322140), (70, 299130), (75, 279188), (78, 268450), (84, 249275), (91, 230100), (100, 209391), (105, 199420), (118, 177450), (130, 161070), (140, 149565), (150, 139594), (156, 134225), (169, 123900), (175, 119652), (177, 118300), (182, 115050), (195, 107380), (210, 99710), (236, 88725), (260, 80535), (273, 76700), (295, 70980), (300, 69797), (325, 64428), (338, 61950), (350, 59826), (354, 59150), (364, 57525), (390, 53690), (413, 50700), (420, 49855), (455, 46020), (507, 41300), (525, 39884), (546, 38350), (590, 35490), (650, 32214), (676, 30975), (700, 29913), (708, 29575), (767, 27300), (780, 26845), (826, 25350), (845, 24780), (885, 23660), (910, 23010), (975, 21476), (1014, 20650), (1050, 19942), (1092, 19175), (1180, 17745), (1183, 17700), (1239, 16900), (1300, 16107), (1365, 15340), (1475, 14196), (1534, 13650), (1652, 12675), (1690, 12390), (1770, 11830), (1820, 11505), (1950, 10738), (2028, 10325), (2065, 10140), (2100, 9971), (2275, 9204), (2301, 9100), (2366, 8850), (2478, 8450), (2535, 8260), (2730, 7670), (2950, 7098), (3068, 6825), (3380, 6195), (3540, 5915), (3549, 5900), (3835, 5460), (3900, 5369), (4130, 5070), (4225, 4956), (4425, 4732), (4550, 4602)]