21081888

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{1031}}^1$

素因数の和:1118

約数の個数: 72

約数和(自身を含む): 60854976

約数和(自身を除く): 39773088

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 142, 144, 213, 284, 288, 426, 568, 639, 852, 1031, 1136, 1278, 1704, 2062, 2272, 2556, 3093, 3408, 4124, 5112, 6186, 6816, 8248, 9279, 10224, 12372, 16496, 18558, 20448, 24744, 32992, 37116, 49488, 73201, 74232, 98976, 146402, 148464, 219603, 292804, 296928, 439206, 585608, 658809, 878412, 1171216, 1317618, 1756824, 2342432, 2635236, 3513648, 5270472, 7027296, 10540944, 21081888]

約数ペア:

[(1, 21081888), (2, 10540944), (3, 7027296), (4, 5270472), (6, 3513648), (8, 2635236), (9, 2342432), (12, 1756824), (16, 1317618), (18, 1171216), (24, 878412), (32, 658809), (36, 585608), (48, 439206), (71, 296928), (72, 292804), (96, 219603), (142, 148464), (144, 146402), (213, 98976), (284, 74232), (288, 73201), (426, 49488), (568, 37116), (639, 32992), (852, 24744), (1031, 20448), (1136, 18558), (1278, 16496), (1704, 12372), (2062, 10224), (2272, 9279), (2556, 8248), (3093, 6816), (3408, 6186), (4124, 5112)]