20156980

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3719}}^1$

素因数の和:3999

約数の個数: 24

約数和(自身を含む): 42497280

約数和(自身を除く): 22340300

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3719, 5420, 7438, 14876, 18595, 37190, 74380, 1007849, 2015698, 4031396, 5039245, 10078490, 20156980]

約数ペア:

[(1, 20156980), (2, 10078490), (4, 5039245), (5, 4031396), (10, 2015698), (20, 1007849), (271, 74380), (542, 37190), (1084, 18595), (1355, 14876), (2710, 7438), (3719, 5420)]