18420956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{1487}}^1$

素因数の和:1673

約数の個数: 24

約数和(自身を含む): 34164480

約数和(自身を除く): 15743524

約数列:

[1, 2, 4, 19, 38, 76, 163, 326, 652, 1487, 2974, 3097, 5948, 6194, 12388, 28253, 56506, 113012, 242381, 484762, 969524, 4605239, 9210478, 18420956]

約数ペア:

[(1, 18420956), (2, 9210478), (4, 4605239), (19, 969524), (38, 484762), (76, 242381), (163, 113012), (326, 56506), (652, 28253), (1487, 12388), (2974, 6194), (3097, 5948)]