21001576

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{727}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 41408640

約数和(自身を除く): 20407064

約数列:

[1, 2, 4, 8, 23, 46, 92, 157, 184, 314, 628, 727, 1256, 1454, 2908, 3611, 5816, 7222, 14444, 16721, 28888, 33442, 66884, 114139, 133768, 228278, 456556, 913112, 2625197, 5250394, 10500788, 21001576]

約数ペア:

[(1, 21001576), (2, 10500788), (4, 5250394), (8, 2625197), (23, 913112), (46, 456556), (92, 228278), (157, 133768), (184, 114139), (314, 66884), (628, 33442), (727, 28888), (1256, 16721), (1454, 14444), (2908, 7222), (3611, 5816)]