21472241

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 26778600

約数和(自身を除く): 5306359

約数列:

[1, 7, 17, 49, 119, 149, 173, 833, 1043, 1211, 2533, 2941, 7301, 8477, 17731, 20587, 25777, 124117, 144109, 180439, 438209, 1263073, 3067463, 21472241]

約数ペア:

[(1, 21472241), (7, 3067463), (17, 1263073), (49, 438209), (119, 180439), (149, 144109), (173, 124117), (833, 25777), (1043, 20587), (1211, 17731), (2533, 8477), (2941, 7301)]