21431732

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 44636928

約数和(自身を除く): 23205196

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 137, 148, 151, 259, 274, 302, 518, 548, 604, 959, 1036, 1057, 1918, 2114, 3836, 4228, 5069, 5587, 10138, 11174, 20276, 20687, 22348, 35483, 39109, 41374, 70966, 78218, 82748, 141932, 144809, 156436, 289618, 579236, 765419, 1530838, 3061676, 5357933, 10715866, 21431732]

約数ペア:

[(1, 21431732), (2, 10715866), (4, 5357933), (7, 3061676), (14, 1530838), (28, 765419), (37, 579236), (74, 289618), (137, 156436), (148, 144809), (151, 141932), (259, 82748), (274, 78218), (302, 70966), (518, 41374), (548, 39109), (604, 35483), (959, 22348), (1036, 20687), (1057, 20276), (1918, 11174), (2114, 10138), (3836, 5587), (4228, 5069)]