21491617150

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{212683}}^1$

素因数の和:212785

約数の個数: 48

約数和(自身を含む): 41774540544

約数和(自身を除く): 20282923394

約数列:

[1, 2, 5, 10, 25, 43, 47, 50, 86, 94, 215, 235, 430, 470, 1075, 1175, 2021, 2150, 2350, 4042, 10105, 20210, 50525, 101050, 212683, 425366, 1063415, 2126830, 5317075, 9145369, 9996101, 10634150, 18290738, 19992202, 45726845, 49980505, 91453690, 99961010, 228634225, 249902525, 429832343, 457268450, 499805050, 859664686, 2149161715, 4298323430, 10745808575, 21491617150]

約数ペア:

[(1, 21491617150), (2, 10745808575), (5, 4298323430), (10, 2149161715), (25, 859664686), (43, 499805050), (47, 457268450), (50, 429832343), (86, 249902525), (94, 228634225), (215, 99961010), (235, 91453690), (430, 49980505), (470, 45726845), (1075, 19992202), (1175, 18290738), (2021, 10634150), (2150, 9996101), (2350, 9145369), (4042, 5317075), (10105, 2126830), (20210, 1063415), (50525, 425366), (101050, 212683)]