68519920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3947}}^1$

素因数の和:3998

約数の個数: 80

約数和(自身を含む): 187987968

約数和(自身を除く): 119468048

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 3947, 4340, 7894, 8680, 15788, 17360, 19735, 27629, 31576, 39470, 55258, 63152, 78940, 110516, 122357, 138145, 157880, 221032, 244714, 276290, 315760, 442064, 489428, 552580, 611785, 856499, 978856, 1105160, 1223570, 1712998, 1957712, 2210320, 2447140, 3425996, 4282495, 4894280, 6851992, 8564990, 9788560, 13703984, 17129980, 34259960, 68519920]

約数ペア:

[(1, 68519920), (2, 34259960), (4, 17129980), (5, 13703984), (7, 9788560), (8, 8564990), (10, 6851992), (14, 4894280), (16, 4282495), (20, 3425996), (28, 2447140), (31, 2210320), (35, 1957712), (40, 1712998), (56, 1223570), (62, 1105160), (70, 978856), (80, 856499), (112, 611785), (124, 552580), (140, 489428), (155, 442064), (217, 315760), (248, 276290), (280, 244714), (310, 221032), (434, 157880), (496, 138145), (560, 122357), (620, 110516), (868, 78940), (1085, 63152), (1240, 55258), (1736, 39470), (2170, 31576), (2480, 27629), (3472, 19735), (3947, 17360), (4340, 15788), (7894, 8680)]