20001820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32261}}^1$

素因数の和:32301

約数の個数: 24

約数和(自身を含む): 43360128

約数和(自身を除く): 23358308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32261, 64522, 129044, 161305, 322610, 645220, 1000091, 2000182, 4000364, 5000455, 10000910, 20001820]

約数ペア:

[(1, 20001820), (2, 10000910), (4, 5000455), (5, 4000364), (10, 2000182), (20, 1000091), (31, 645220), (62, 322610), (124, 161305), (155, 129044), (310, 64522), (620, 32261)]