20538620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{54049}}^1$

素因数の和:54077

約数の個数: 24

約数和(自身を含む): 45402000

約数和(自身を除く): 24863380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 54049, 108098, 216196, 270245, 540490, 1026931, 1080980, 2053862, 4107724, 5134655, 10269310, 20538620]

約数ペア:

[(1, 20538620), (2, 10269310), (4, 5134655), (5, 4107724), (10, 2053862), (19, 1080980), (20, 1026931), (38, 540490), (76, 270245), (95, 216196), (190, 108098), (380, 54049)]