68638420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{443}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 147990528

約数和(自身を除く): 79352108

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 127, 244, 254, 305, 443, 508, 610, 635, 886, 1220, 1270, 1772, 2215, 2540, 4430, 7747, 8860, 15494, 27023, 30988, 38735, 54046, 56261, 77470, 108092, 112522, 135115, 154940, 225044, 270230, 281305, 540460, 562610, 1125220, 3431921, 6863842, 13727684, 17159605, 34319210, 68638420]

約数ペア:

[(1, 68638420), (2, 34319210), (4, 17159605), (5, 13727684), (10, 6863842), (20, 3431921), (61, 1125220), (122, 562610), (127, 540460), (244, 281305), (254, 270230), (305, 225044), (443, 154940), (508, 135115), (610, 112522), (635, 108092), (886, 77470), (1220, 56261), (1270, 54046), (1772, 38735), (2215, 30988), (2540, 27023), (4430, 15494), (7747, 8860)]