21269365

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 29465856

約数和(自身を除く): 8196491

約数列:

[1, 5, 13, 23, 41, 65, 115, 205, 299, 347, 533, 943, 1495, 1735, 2665, 4511, 4715, 7981, 12259, 14227, 22555, 39905, 61295, 71135, 103753, 184951, 327221, 518765, 924755, 1636105, 4253873, 21269365]

約数ペア:

[(1, 21269365), (5, 4253873), (13, 1636105), (23, 924755), (41, 518765), (65, 327221), (115, 184951), (205, 103753), (299, 71135), (347, 61295), (533, 39905), (943, 22555), (1495, 14227), (1735, 12259), (2665, 7981), (4511, 4715)]