858976780

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{203549}}^1$

素因数の和:203769

約数の個数: 24

約数和(自身を含む): 1812409200

約数和(自身を除く): 953432420

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 203549, 407098, 814196, 1017745, 2035490, 4070980, 42948839, 85897678, 171795356, 214744195, 429488390, 858976780]

約数ペア:

[(1, 858976780), (2, 429488390), (4, 214744195), (5, 171795356), (10, 85897678), (20, 42948839), (211, 4070980), (422, 2035490), (844, 1017745), (1055, 814196), (2110, 407098), (4220, 203549)]