31218320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{521}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 83887488

約数和(自身を除く): 52669168

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 107, 112, 140, 214, 280, 428, 521, 535, 560, 749, 856, 1042, 1070, 1498, 1712, 2084, 2140, 2605, 2996, 3647, 3745, 4168, 4280, 5210, 5992, 7294, 7490, 8336, 8560, 10420, 11984, 14588, 14980, 18235, 20840, 29176, 29960, 36470, 41680, 55747, 58352, 59920, 72940, 111494, 145880, 222988, 278735, 291760, 390229, 445976, 557470, 780458, 891952, 1114940, 1560916, 1951145, 2229880, 3121832, 3902290, 4459760, 6243664, 7804580, 15609160, 31218320]

約数ペア:

[(1, 31218320), (2, 15609160), (4, 7804580), (5, 6243664), (7, 4459760), (8, 3902290), (10, 3121832), (14, 2229880), (16, 1951145), (20, 1560916), (28, 1114940), (35, 891952), (40, 780458), (56, 557470), (70, 445976), (80, 390229), (107, 291760), (112, 278735), (140, 222988), (214, 145880), (280, 111494), (428, 72940), (521, 59920), (535, 58352), (560, 55747), (749, 41680), (856, 36470), (1042, 29960), (1070, 29176), (1498, 20840), (1712, 18235), (2084, 14980), (2140, 14588), (2605, 11984), (2996, 10420), (3647, 8560), (3745, 8336), (4168, 7490), (4280, 7294), (5210, 5992)]