20509996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2879}}^1$

素因数の和:3033

約数の個数: 24

約数和(自身を含む): 38949120

約数和(自身を除く): 18439124

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 2879, 3562, 5758, 7124, 11516, 37427, 74854, 149708, 394423, 788846, 1577692, 5127499, 10254998, 20509996]

約数ペア:

[(1, 20509996), (2, 10254998), (4, 5127499), (13, 1577692), (26, 788846), (52, 394423), (137, 149708), (274, 74854), (548, 37427), (1781, 11516), (2879, 7124), (3562, 5758)]