21000663472

素因数分解:

$2^4\times {\mathrm{227}}^1\times {\mathrm{5782121}}^1$

素因数の和:5782356

約数の個数: 20

約数和(自身を含む): 40868038296

約数和(自身を除く): 19867374824

約数列:

[1, 2, 4, 8, 16, 227, 454, 908, 1816, 3632, 5782121, 11564242, 23128484, 46256968, 92513936, 1312541467, 2625082934, 5250165868, 10500331736, 21000663472]

約数ペア:

[(1, 21000663472), (2, 10500331736), (4, 5250165868), (8, 2625082934), (16, 1312541467), (227, 92513936), (454, 46256968), (908, 23128484), (1816, 11564242), (3632, 5782121)]