31421648

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{419}}^1$

素因数の和:579

約数の個数: 40

約数和(自身を含む): 63016800

約数和(自身を除く): 31595152

約数列:

[1, 2, 4, 8, 16, 43, 86, 109, 172, 218, 344, 419, 436, 688, 838, 872, 1676, 1744, 3352, 4687, 6704, 9374, 18017, 18748, 36034, 37496, 45671, 72068, 74992, 91342, 144136, 182684, 288272, 365368, 730736, 1963853, 3927706, 7855412, 15710824, 31421648]

約数ペア:

[(1, 31421648), (2, 15710824), (4, 7855412), (8, 3927706), (16, 1963853), (43, 730736), (86, 365368), (109, 288272), (172, 182684), (218, 144136), (344, 91342), (419, 74992), (436, 72068), (688, 45671), (838, 37496), (872, 36034), (1676, 18748), (1744, 18017), (3352, 9374), (4687, 6704)]