21317660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 59766336

約数和(自身を除く): 38448676

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 53, 65, 68, 70, 85, 91, 106, 119, 130, 140, 169, 170, 182, 212, 221, 238, 260, 265, 338, 340, 364, 371, 442, 455, 476, 530, 595, 676, 689, 742, 845, 884, 901, 910, 1060, 1105, 1183, 1190, 1378, 1484, 1547, 1690, 1802, 1820, 1855, 2210, 2366, 2380, 2756, 2873, 3094, 3380, 3445, 3604, 3710, 4420, 4505, 4732, 4823, 5746, 5915, 6188, 6307, 6890, 7420, 7735, 8957, 9010, 9646, 11492, 11713, 11830, 12614, 13780, 14365, 15470, 17914, 18020, 19292, 20111, 23426, 23660, 24115, 25228, 28730, 30940, 31535, 35828, 40222, 44785, 46852, 48230, 57460, 58565, 62699, 63070, 80444, 81991, 89570, 96460, 100555, 117130, 125398, 126140, 152269, 163982, 179140, 201110, 234260, 250796, 304538, 313495, 327964, 402220, 409955, 609076, 626990, 761345, 819910, 1065883, 1253980, 1522690, 1639820, 2131766, 3045380, 4263532, 5329415, 10658830, 21317660]

約数ペア:

[(1, 21317660), (2, 10658830), (4, 5329415), (5, 4263532), (7, 3045380), (10, 2131766), (13, 1639820), (14, 1522690), (17, 1253980), (20, 1065883), (26, 819910), (28, 761345), (34, 626990), (35, 609076), (52, 409955), (53, 402220), (65, 327964), (68, 313495), (70, 304538), (85, 250796), (91, 234260), (106, 201110), (119, 179140), (130, 163982), (140, 152269), (169, 126140), (170, 125398), (182, 117130), (212, 100555), (221, 96460), (238, 89570), (260, 81991), (265, 80444), (338, 63070), (340, 62699), (364, 58565), (371, 57460), (442, 48230), (455, 46852), (476, 44785), (530, 40222), (595, 35828), (676, 31535), (689, 30940), (742, 28730), (845, 25228), (884, 24115), (901, 23660), (910, 23426), (1060, 20111), (1105, 19292), (1183, 18020), (1190, 17914), (1378, 15470), (1484, 14365), (1547, 13780), (1690, 12614), (1802, 11830), (1820, 11713), (1855, 11492), (2210, 9646), (2366, 9010), (2380, 8957), (2756, 7735), (2873, 7420), (3094, 6890), (3380, 6307), (3445, 6188), (3604, 5915), (3710, 5746), (4420, 4823), (4505, 4732)]