21410320

素因数分解:

$2^4\times 5^1\times {\mathrm{267629}}^1$

素因数の和:267642

約数の個数: 20

約数和(自身を含む): 49779180

約数和(自身を除く): 28368860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267629, 535258, 1070516, 1338145, 2141032, 2676290, 4282064, 5352580, 10705160, 21410320]

約数ペア:

[(1, 21410320), (2, 10705160), (4, 5352580), (5, 4282064), (8, 2676290), (10, 2141032), (16, 1338145), (20, 1070516), (40, 535258), (80, 267629)]