19915480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38299}}^1$

素因数の和:38323

約数の個数: 32

約数和(自身を含む): 48258000

約数和(自身を除く): 28342520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38299, 76598, 153196, 191495, 306392, 382990, 497887, 765980, 995774, 1531960, 1991548, 2489435, 3983096, 4978870, 9957740, 19915480]

約数ペア:

[(1, 19915480), (2, 9957740), (4, 4978870), (5, 3983096), (8, 2489435), (10, 1991548), (13, 1531960), (20, 995774), (26, 765980), (40, 497887), (52, 382990), (65, 306392), (104, 191495), (130, 153196), (260, 76598), (520, 38299)]