81262100

素因数分解:

$2^2\times 5^2\times {\mathrm{389}}^1\times {\mathrm{2089}}^1$

素因数の和:2492

約数の個数: 36

約数和(自身を含む): 176876700

約数和(自身を除く): 95614600

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 389, 778, 1556, 1945, 2089, 3890, 4178, 7780, 8356, 9725, 10445, 19450, 20890, 38900, 41780, 52225, 104450, 208900, 812621, 1625242, 3250484, 4063105, 8126210, 16252420, 20315525, 40631050, 81262100]

約数ペア:

[(1, 81262100), (2, 40631050), (4, 20315525), (5, 16252420), (10, 8126210), (20, 4063105), (25, 3250484), (50, 1625242), (100, 812621), (389, 208900), (778, 104450), (1556, 52225), (1945, 41780), (2089, 38900), (3890, 20890), (4178, 19450), (7780, 10445), (8356, 9725)]