21472516

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{5227}}^1$

素因数の和:5323

約数の個数: 24

約数和(自身を含む): 40987520

約数和(自身を除く): 19515004

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 5227, 10454, 20908, 67951, 135902, 271804, 412933, 825866, 1651732, 5368129, 10736258, 21472516]

約数ペア:

[(1, 21472516), (2, 10736258), (4, 5368129), (13, 1651732), (26, 825866), (52, 412933), (79, 271804), (158, 135902), (316, 67951), (1027, 20908), (2054, 10454), (4108, 5227)]