20153704

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{379}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 41997600

約数和(自身を除く): 21843896

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 136, 184, 289, 379, 391, 578, 758, 782, 1156, 1516, 1564, 2312, 3032, 3128, 6443, 6647, 8717, 12886, 13294, 17434, 25772, 26588, 34868, 51544, 53176, 69736, 109531, 148189, 219062, 296378, 438124, 592756, 876248, 1185512, 2519213, 5038426, 10076852, 20153704]

約数ペア:

[(1, 20153704), (2, 10076852), (4, 5038426), (8, 2519213), (17, 1185512), (23, 876248), (34, 592756), (46, 438124), (68, 296378), (92, 219062), (136, 148189), (184, 109531), (289, 69736), (379, 53176), (391, 51544), (578, 34868), (758, 26588), (782, 25772), (1156, 17434), (1516, 13294), (1564, 12886), (2312, 8717), (3032, 6647), (3128, 6443)]