20269784

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^2$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 41167680

約数和(自身を除く): 20897896

約数列:

[1, 2, 4, 8, 31, 37, 47, 62, 74, 94, 124, 148, 188, 248, 296, 376, 1147, 1457, 1739, 2209, 2294, 2914, 3478, 4418, 4588, 5828, 6956, 8836, 9176, 11656, 13912, 17672, 53909, 68479, 81733, 107818, 136958, 163466, 215636, 273916, 326932, 431272, 547832, 653864, 2533723, 5067446, 10134892, 20269784]

約数ペア:

[(1, 20269784), (2, 10134892), (4, 5067446), (8, 2533723), (31, 653864), (37, 547832), (47, 431272), (62, 326932), (74, 273916), (94, 215636), (124, 163466), (148, 136958), (188, 107818), (248, 81733), (296, 68479), (376, 53909), (1147, 17672), (1457, 13912), (1739, 11656), (2209, 9176), (2294, 8836), (2914, 6956), (3478, 5828), (4418, 4588)]