21784360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41893}}^1$

素因数の和:41917

約数の個数: 32

約数和(自身を含む): 52786440

約数和(自身を除く): 31002080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41893, 83786, 167572, 209465, 335144, 418930, 544609, 837860, 1089218, 1675720, 2178436, 2723045, 4356872, 5446090, 10892180, 21784360]

約数ペア:

[(1, 21784360), (2, 10892180), (4, 5446090), (5, 4356872), (8, 2723045), (10, 2178436), (13, 1675720), (20, 1089218), (26, 837860), (40, 544609), (52, 418930), (65, 335144), (104, 209465), (130, 167572), (260, 83786), (520, 41893)]