21768460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2549}}^1$

素因数の和:2626

約数の個数: 48

約数和(自身を含む): 53121600

約数和(自身を除く): 31353140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2549, 4270, 5098, 8540, 10196, 12745, 17843, 25490, 35686, 50980, 71372, 89215, 155489, 178430, 310978, 356860, 621956, 777445, 1088423, 1554890, 2176846, 3109780, 4353692, 5442115, 10884230, 21768460]

約数ペア:

[(1, 21768460), (2, 10884230), (4, 5442115), (5, 4353692), (7, 3109780), (10, 2176846), (14, 1554890), (20, 1088423), (28, 777445), (35, 621956), (61, 356860), (70, 310978), (122, 178430), (140, 155489), (244, 89215), (305, 71372), (427, 50980), (610, 35686), (854, 25490), (1220, 17843), (1708, 12745), (2135, 10196), (2549, 8540), (4270, 5098)]