87690940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{2111}}^1$

素因数の和:2218

約数の個数: 48

約数和(自身を含む): 193019904

約数和(自身を除く): 105328964

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 268, 310, 335, 620, 670, 1340, 2077, 2111, 4154, 4222, 8308, 8444, 10385, 10555, 20770, 21110, 41540, 42220, 65441, 130882, 141437, 261764, 282874, 327205, 565748, 654410, 707185, 1308820, 1414370, 2828740, 4384547, 8769094, 17538188, 21922735, 43845470, 87690940]

約数ペア:

[(1, 87690940), (2, 43845470), (4, 21922735), (5, 17538188), (10, 8769094), (20, 4384547), (31, 2828740), (62, 1414370), (67, 1308820), (124, 707185), (134, 654410), (155, 565748), (268, 327205), (310, 282874), (335, 261764), (620, 141437), (670, 130882), (1340, 65441), (2077, 42220), (2111, 41540), (4154, 21110), (4222, 20770), (8308, 10555), (8444, 10385)]