18909410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:267

約数の個数: 48

約数和(自身を含む): 37630656

約数和(自身を除く): 18721246

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 167, 169, 334, 335, 338, 670, 835, 845, 871, 1670, 1690, 1742, 2171, 4342, 4355, 8710, 10855, 11189, 11323, 21710, 22378, 22646, 28223, 55945, 56446, 56615, 111890, 113230, 141115, 145457, 282230, 290914, 727285, 1454570, 1890941, 3781882, 9454705, 18909410]

約数ペア:

[(1, 18909410), (2, 9454705), (5, 3781882), (10, 1890941), (13, 1454570), (26, 727285), (65, 290914), (67, 282230), (130, 145457), (134, 141115), (167, 113230), (169, 111890), (334, 56615), (335, 56446), (338, 55945), (670, 28223), (835, 22646), (845, 22378), (871, 21710), (1670, 11323), (1690, 11189), (1742, 10855), (2171, 8710), (4342, 4355)]