20145700820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509}}^1\times {\mathrm{282707}}^1$

素因数の和:283232

約数の個数: 48

約数和(自身を含む): 48444842880

約数和(自身を除く): 28299142060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509, 1018, 2036, 2545, 3563, 5090, 7126, 10180, 14252, 17815, 35630, 71260, 282707, 565414, 1130828, 1413535, 1978949, 2827070, 3957898, 5654140, 7915796, 9894745, 19789490, 39578980, 143897863, 287795726, 575591452, 719489315, 1007285041, 1438978630, 2014570082, 2877957260, 4029140164, 5036425205, 10072850410, 20145700820]

約数ペア:

[(1, 20145700820), (2, 10072850410), (4, 5036425205), (5, 4029140164), (7, 2877957260), (10, 2014570082), (14, 1438978630), (20, 1007285041), (28, 719489315), (35, 575591452), (70, 287795726), (140, 143897863), (509, 39578980), (1018, 19789490), (2036, 9894745), (2545, 7915796), (3563, 5654140), (5090, 3957898), (7126, 2827070), (10180, 1978949), (14252, 1413535), (17815, 1130828), (35630, 565414), (71260, 282707)]