21297496

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 46402560

約数和(自身を除く): 25105064

約数列:

[1, 2, 4, 8, 11, 22, 31, 37, 44, 62, 74, 88, 124, 148, 211, 248, 296, 341, 407, 422, 682, 814, 844, 1147, 1364, 1628, 1688, 2294, 2321, 2728, 3256, 4588, 4642, 6541, 7807, 9176, 9284, 12617, 13082, 15614, 18568, 25234, 26164, 31228, 50468, 52328, 62456, 71951, 85877, 100936, 143902, 171754, 242017, 287804, 343508, 484034, 575608, 687016, 968068, 1936136, 2662187, 5324374, 10648748, 21297496]

約数ペア:

[(1, 21297496), (2, 10648748), (4, 5324374), (8, 2662187), (11, 1936136), (22, 968068), (31, 687016), (37, 575608), (44, 484034), (62, 343508), (74, 287804), (88, 242017), (124, 171754), (148, 143902), (211, 100936), (248, 85877), (296, 71951), (341, 62456), (407, 52328), (422, 50468), (682, 31228), (814, 26164), (844, 25234), (1147, 18568), (1364, 15614), (1628, 13082), (1688, 12617), (2294, 9284), (2321, 9176), (2728, 7807), (3256, 6541), (4588, 4642)]