20107880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38669}}^1$

素因数の和:38693

約数の個数: 32

約数和(自身を含む): 48724200

約数和(自身を除く): 28616320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38669, 77338, 154676, 193345, 309352, 386690, 502697, 773380, 1005394, 1546760, 2010788, 2513485, 4021576, 5026970, 10053940, 20107880]

約数ペア:

[(1, 20107880), (2, 10053940), (4, 5026970), (5, 4021576), (8, 2513485), (10, 2010788), (13, 1546760), (20, 1005394), (26, 773380), (40, 502697), (52, 386690), (65, 309352), (104, 193345), (130, 154676), (260, 77338), (520, 38669)]