389639120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{374653}}^1$

素因数の和:374679

約数の個数: 40

約数和(自身を含む): 975599016

約数和(自身を除く): 585959896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 374653, 749306, 1498612, 1873265, 2997224, 3746530, 4870489, 5994448, 7493060, 9740978, 14986120, 19481956, 24352445, 29972240, 38963912, 48704890, 77927824, 97409780, 194819560, 389639120]

約数ペア:

[(1, 389639120), (2, 194819560), (4, 97409780), (5, 77927824), (8, 48704890), (10, 38963912), (13, 29972240), (16, 24352445), (20, 19481956), (26, 14986120), (40, 9740978), (52, 7493060), (65, 5994448), (80, 4870489), (104, 3746530), (130, 2997224), (208, 1873265), (260, 1498612), (520, 749306), (1040, 374653)]