201211855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1637}}^1$

素因数の和:1747

約数の個数: 32

約数和(自身を含む): 272982528

約数和(自身を除く): 71770673

約数列:

[1, 5, 13, 31, 61, 65, 155, 305, 403, 793, 1637, 1891, 2015, 3965, 8185, 9455, 21281, 24583, 50747, 99857, 106405, 122915, 253735, 499285, 659711, 1298141, 3095567, 3298555, 6490705, 15477835, 40242371, 201211855]

約数ペア:

[(1, 201211855), (5, 40242371), (13, 15477835), (31, 6490705), (61, 3298555), (65, 3095567), (155, 1298141), (305, 659711), (403, 499285), (793, 253735), (1637, 122915), (1891, 106405), (2015, 99857), (3965, 50747), (8185, 24583), (9455, 21281)]