31021520

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1609}}^1$

素因数の和:1863

約数の個数: 40

約数和(自身を含む): 72469320

約数和(自身を除く): 41447800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1609, 1928, 2410, 3218, 3856, 4820, 6436, 8045, 9640, 12872, 16090, 19280, 25744, 32180, 64360, 128720, 387769, 775538, 1551076, 1938845, 3102152, 3877690, 6204304, 7755380, 15510760, 31021520]

約数ペア:

[(1, 31021520), (2, 15510760), (4, 7755380), (5, 6204304), (8, 3877690), (10, 3102152), (16, 1938845), (20, 1551076), (40, 775538), (80, 387769), (241, 128720), (482, 64360), (964, 32180), (1205, 25744), (1609, 19280), (1928, 16090), (2410, 12872), (3218, 9640), (3856, 8045), (4820, 6436)]