18630416

素因数分解:

$2^4\times 7^1\times {\mathrm{397}}^1\times {\mathrm{419}}^1$

素因数の和:831

約数の個数: 40

約数和(自身を含む): 41455680

約数和(自身を除く): 22825264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 397, 419, 794, 838, 1588, 1676, 2779, 2933, 3176, 3352, 5558, 5866, 6352, 6704, 11116, 11732, 22232, 23464, 44464, 46928, 166343, 332686, 665372, 1164401, 1330744, 2328802, 2661488, 4657604, 9315208, 18630416]

約数ペア:

[(1, 18630416), (2, 9315208), (4, 4657604), (7, 2661488), (8, 2328802), (14, 1330744), (16, 1164401), (28, 665372), (56, 332686), (112, 166343), (397, 46928), (419, 44464), (794, 23464), (838, 22232), (1588, 11732), (1676, 11116), (2779, 6704), (2933, 6352), (3176, 5866), (3352, 5558)]