21421167280

素因数分解:

$2^4\times 5^1\times {\mathrm{1429}}^1\times {\mathrm{187379}}^1$

素因数の和:188821

約数の個数: 40

約数和(自身を含む): 49839332400

約数和(自身を除く): 28418165120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1429, 2858, 5716, 7145, 11432, 14290, 22864, 28580, 57160, 114320, 187379, 374758, 749516, 936895, 1499032, 1873790, 2998064, 3747580, 7495160, 14990320, 267764591, 535529182, 1071058364, 1338822955, 2142116728, 2677645910, 4284233456, 5355291820, 10710583640, 21421167280]

約数ペア:

[(1, 21421167280), (2, 10710583640), (4, 5355291820), (5, 4284233456), (8, 2677645910), (10, 2142116728), (16, 1338822955), (20, 1071058364), (40, 535529182), (80, 267764591), (1429, 14990320), (2858, 7495160), (5716, 3747580), (7145, 2998064), (11432, 1873790), (14290, 1499032), (22864, 936895), (28580, 749516), (57160, 374758), (114320, 187379)]