21000657685

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1\times {\mathrm{61813}}^1$

素因数の和:62413

約数の個数: 32

約数和(自身を含む): 30548973312

約数和(自身を除く): 9548315627

約数列:

[1, 5, 7, 17, 35, 85, 119, 571, 595, 2855, 3997, 9707, 19985, 48535, 61813, 67949, 309065, 339745, 432691, 1050821, 2163455, 5254105, 7355747, 35295223, 36778735, 176476115, 247066561, 600018791, 1235332805, 3000093955, 4200131537, 21000657685]

約数ペア:

[(1, 21000657685), (5, 4200131537), (7, 3000093955), (17, 1235332805), (35, 600018791), (85, 247066561), (119, 176476115), (571, 36778735), (595, 35295223), (2855, 7355747), (3997, 5254105), (9707, 2163455), (19985, 1050821), (48535, 432691), (61813, 339745), (67949, 309065)]