257790232

素因数分解:

$2^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 563112000

約数和(自身を除く): 305321768

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 109, 157, 218, 269, 314, 436, 538, 628, 763, 872, 1076, 1099, 1256, 1526, 1883, 2152, 2198, 3052, 3766, 4396, 6104, 7532, 8792, 15064, 17113, 29321, 34226, 42233, 58642, 68452, 84466, 117284, 119791, 136904, 168932, 205247, 234568, 239582, 295631, 337864, 410494, 479164, 591262, 820988, 958328, 1182524, 1641976, 2365048, 4603397, 9206794, 18413588, 32223779, 36827176, 64447558, 128895116, 257790232]

約数ペア:

[(1, 257790232), (2, 128895116), (4, 64447558), (7, 36827176), (8, 32223779), (14, 18413588), (28, 9206794), (56, 4603397), (109, 2365048), (157, 1641976), (218, 1182524), (269, 958328), (314, 820988), (436, 591262), (538, 479164), (628, 410494), (763, 337864), (872, 295631), (1076, 239582), (1099, 234568), (1256, 205247), (1526, 168932), (1883, 136904), (2152, 119791), (2198, 117284), (3052, 84466), (3766, 68452), (4396, 58642), (6104, 42233), (7532, 34226), (8792, 29321), (15064, 17113)]