21621416

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{158981}}^1$

素因数の和:159004

約数の個数: 16

約数和(自身を含む): 42925140

約数和(自身を除く): 21303724

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 158981, 317962, 635924, 1271848, 2702677, 5405354, 10810708, 21621416]

約数ペア:

[(1, 21621416), (2, 10810708), (4, 5405354), (8, 2702677), (17, 1271848), (34, 635924), (68, 317962), (136, 158981)]