8140520

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1801}}^1$

素因数の和:1925

約数の個数: 32

約数和(自身を含む): 18488520

約数和(自身を除く): 10348000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 1801, 2260, 3602, 4520, 7204, 9005, 14408, 18010, 36020, 72040, 203513, 407026, 814052, 1017565, 1628104, 2035130, 4070260, 8140520]

約数ペア:

[(1, 8140520), (2, 4070260), (4, 2035130), (5, 1628104), (8, 1017565), (10, 814052), (20, 407026), (40, 203513), (113, 72040), (226, 36020), (452, 18010), (565, 14408), (904, 9005), (1130, 7204), (1801, 4520), (2260, 3602)]