21610775

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 28045824

約数和(自身を除く): 6435049

約数列:

[1, 5, 25, 37, 61, 185, 305, 383, 925, 1525, 1915, 2257, 9575, 11285, 14171, 23363, 56425, 70855, 116815, 354275, 584075, 864431, 4322155, 21610775]

約数ペア:

[(1, 21610775), (5, 4322155), (25, 864431), (37, 584075), (61, 354275), (185, 116815), (305, 70855), (383, 56425), (925, 23363), (1525, 14171), (1915, 11285), (2257, 9575)]