204045980

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{12611}}^1$

素因数の和:13429

約数の個数: 24

約数和(自身を含む): 429060240

約数和(自身を除く): 225014260

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 3236, 4045, 8090, 12611, 16180, 25222, 50444, 63055, 126110, 252220, 10202299, 20404598, 40809196, 51011495, 102022990, 204045980]

約数ペア:

[(1, 204045980), (2, 102022990), (4, 51011495), (5, 40809196), (10, 20404598), (20, 10202299), (809, 252220), (1618, 126110), (3236, 63055), (4045, 50444), (8090, 25222), (12611, 16180)]