21788468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6869}}^1$

素因数の和:6947

約数の個数: 24

約数和(自身を含む): 41742120

約数和(自身を除く): 19953652

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6869, 13738, 27476, 89297, 178594, 357188, 419009, 838018, 1676036, 5447117, 10894234, 21788468]

約数ペア:

[(1, 21788468), (2, 10894234), (4, 5447117), (13, 1676036), (26, 838018), (52, 419009), (61, 357188), (122, 178594), (244, 89297), (793, 27476), (1586, 13738), (3172, 6869)]