18388601456

素因数分解:

$2^4\times {\mathrm{1789}}^1\times {\mathrm{642419}}^1$

素因数の和:644216

約数の個数: 20

約数和(自身を含む): 35647885800

約数和(自身を除く): 17259284344

約数列:

[1, 2, 4, 8, 16, 1789, 3578, 7156, 14312, 28624, 642419, 1284838, 2569676, 5139352, 10278704, 1149287591, 2298575182, 4597150364, 9194300728, 18388601456]

約数ペア:

[(1, 18388601456), (2, 9194300728), (4, 4597150364), (8, 2298575182), (16, 1149287591), (1789, 10278704), (3578, 5139352), (7156, 2569676), (14312, 1284838), (28624, 642419)]