21813855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{2017}}^1$

素因数の和:2135

約数の個数: 32

約数和(自身を含む): 40295424

約数和(自身を除く): 18481569

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 2017, 2163, 3605, 6051, 10085, 10815, 14119, 30255, 42357, 70595, 207751, 211785, 623253, 1038755, 1454257, 3116265, 4362771, 7271285, 21813855]

約数ペア:

[(1, 21813855), (3, 7271285), (5, 4362771), (7, 3116265), (15, 1454257), (21, 1038755), (35, 623253), (103, 211785), (105, 207751), (309, 70595), (515, 42357), (721, 30255), (1545, 14119), (2017, 10815), (2163, 10085), (3605, 6051)]