20939022

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2081}}^1$

素因数の和:2145

約数の個数: 48

約数和(自身を含む): 50017968

約数和(自身を除く): 29078946

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 2081, 3354, 4162, 5031, 6243, 10062, 12486, 18729, 27053, 37458, 54106, 81159, 89483, 162318, 178966, 243477, 268449, 486954, 536898, 805347, 1163279, 1610694, 2326558, 3489837, 6979674, 10469511, 20939022]

約数ペア:

[(1, 20939022), (2, 10469511), (3, 6979674), (6, 3489837), (9, 2326558), (13, 1610694), (18, 1163279), (26, 805347), (39, 536898), (43, 486954), (78, 268449), (86, 243477), (117, 178966), (129, 162318), (234, 89483), (258, 81159), (387, 54106), (559, 37458), (774, 27053), (1118, 18729), (1677, 12486), (2081, 10062), (3354, 6243), (4162, 5031)]