21621140

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 25371820

約数列:

[1, 2, 4, 5, 10, 20, 59, 73, 118, 146, 236, 251, 292, 295, 365, 502, 590, 730, 1004, 1180, 1255, 1460, 2510, 4307, 5020, 8614, 14809, 17228, 18323, 21535, 29618, 36646, 43070, 59236, 73292, 74045, 86140, 91615, 148090, 183230, 296180, 366460, 1081057, 2162114, 4324228, 5405285, 10810570, 21621140]

約数ペア:

[(1, 21621140), (2, 10810570), (4, 5405285), (5, 4324228), (10, 2162114), (20, 1081057), (59, 366460), (73, 296180), (118, 183230), (146, 148090), (236, 91615), (251, 86140), (292, 74045), (295, 73292), (365, 59236), (502, 43070), (590, 36646), (730, 29618), (1004, 21535), (1180, 18323), (1255, 17228), (1460, 14809), (2510, 8614), (4307, 5020)]