20915640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{58099}}^1$

素因数の和:58116

約数の個数: 48

約数和(自身を含む): 67977000

約数和(自身を除く): 47061360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 58099, 116198, 174297, 232396, 290495, 348594, 464792, 522891, 580990, 697188, 871485, 1045782, 1161980, 1394376, 1742970, 2091564, 2323960, 2614455, 3485940, 4183128, 5228910, 6971880, 10457820, 20915640]

約数ペア:

[(1, 20915640), (2, 10457820), (3, 6971880), (4, 5228910), (5, 4183128), (6, 3485940), (8, 2614455), (9, 2323960), (10, 2091564), (12, 1742970), (15, 1394376), (18, 1161980), (20, 1045782), (24, 871485), (30, 697188), (36, 580990), (40, 522891), (45, 464792), (60, 348594), (72, 290495), (90, 232396), (120, 174297), (180, 116198), (360, 58099)]