20631056

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 41378304

約数和(自身を除く): 20747248

約数列:

[1, 2, 4, 8, 16, 43, 86, 157, 172, 191, 314, 344, 382, 628, 688, 764, 1256, 1528, 2512, 3056, 6751, 8213, 13502, 16426, 27004, 29987, 32852, 54008, 59974, 65704, 108016, 119948, 131408, 239896, 479792, 1289441, 2578882, 5157764, 10315528, 20631056]

約数ペア:

[(1, 20631056), (2, 10315528), (4, 5157764), (8, 2578882), (16, 1289441), (43, 479792), (86, 239896), (157, 131408), (172, 119948), (191, 108016), (314, 65704), (344, 59974), (382, 54008), (628, 32852), (688, 29987), (764, 27004), (1256, 16426), (1528, 13502), (2512, 8213), (3056, 6751)]