18781648736

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{145531}}^1$

素因数の和:145687

約数の個数: 48

約数和(自身を含む): 38324396880

約数和(自身を除く): 19542748144

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 109, 148, 218, 296, 436, 592, 872, 1184, 1744, 3488, 4033, 8066, 16132, 32264, 64528, 129056, 145531, 291062, 582124, 1164248, 2328496, 4656992, 5384647, 10769294, 15862879, 21538588, 31725758, 43077176, 63451516, 86154352, 126903032, 172308704, 253806064, 507612128, 586926523, 1173853046, 2347706092, 4695412184, 9390824368, 18781648736]

約数ペア:

[(1, 18781648736), (2, 9390824368), (4, 4695412184), (8, 2347706092), (16, 1173853046), (32, 586926523), (37, 507612128), (74, 253806064), (109, 172308704), (148, 126903032), (218, 86154352), (296, 63451516), (436, 43077176), (592, 31725758), (872, 21538588), (1184, 15862879), (1744, 10769294), (3488, 5384647), (4033, 4656992), (8066, 2328496), (16132, 1164248), (32264, 582124), (64528, 291062), (129056, 145531)]