20747844

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1031}}^1$

素因数の和:1097

約数の個数: 72

約数和(自身を含む): 57849792

約数和(自身を除く): 37101948

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 43, 52, 78, 86, 117, 129, 156, 172, 234, 258, 387, 468, 516, 559, 774, 1031, 1118, 1548, 1677, 2062, 2236, 3093, 3354, 4124, 5031, 6186, 6708, 9279, 10062, 12372, 13403, 18558, 20124, 26806, 37116, 40209, 44333, 53612, 80418, 88666, 120627, 132999, 160836, 177332, 241254, 265998, 398997, 482508, 531996, 576329, 797994, 1152658, 1595988, 1728987, 2305316, 3457974, 5186961, 6915948, 10373922, 20747844]

約数ペア:

[(1, 20747844), (2, 10373922), (3, 6915948), (4, 5186961), (6, 3457974), (9, 2305316), (12, 1728987), (13, 1595988), (18, 1152658), (26, 797994), (36, 576329), (39, 531996), (43, 482508), (52, 398997), (78, 265998), (86, 241254), (117, 177332), (129, 160836), (156, 132999), (172, 120627), (234, 88666), (258, 80418), (387, 53612), (468, 44333), (516, 40209), (559, 37116), (774, 26806), (1031, 20124), (1118, 18558), (1548, 13403), (1677, 12372), (2062, 10062), (2236, 9279), (3093, 6708), (3354, 6186), (4124, 5031)]