87391731

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{523}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 136491520

約数和(自身を除く): 49099789

約数列:

[1, 3, 7, 21, 73, 109, 219, 327, 511, 523, 763, 1533, 1569, 2289, 3661, 7957, 10983, 23871, 38179, 55699, 57007, 114537, 167097, 171021, 267253, 399049, 801759, 1197147, 4161511, 12484533, 29130577, 87391731]

約数ペア:

[(1, 87391731), (3, 29130577), (7, 12484533), (21, 4161511), (73, 1197147), (109, 801759), (219, 399049), (327, 267253), (511, 171021), (523, 167097), (763, 114537), (1533, 57007), (1569, 55699), (2289, 38179), (3661, 23871), (7957, 10983)]