17881240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:412

約数の個数: 64

約数和(自身を含む): 43817760

約数和(自身を除く): 25936520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 137, 251, 260, 274, 502, 520, 548, 685, 1004, 1096, 1255, 1370, 1781, 2008, 2510, 2740, 3263, 3562, 5020, 5480, 6526, 7124, 8905, 10040, 13052, 14248, 16315, 17810, 26104, 32630, 34387, 35620, 65260, 68774, 71240, 130520, 137548, 171935, 275096, 343870, 447031, 687740, 894062, 1375480, 1788124, 2235155, 3576248, 4470310, 8940620, 17881240]

約数ペア:

[(1, 17881240), (2, 8940620), (4, 4470310), (5, 3576248), (8, 2235155), (10, 1788124), (13, 1375480), (20, 894062), (26, 687740), (40, 447031), (52, 343870), (65, 275096), (104, 171935), (130, 137548), (137, 130520), (251, 71240), (260, 68774), (274, 65260), (502, 35620), (520, 34387), (548, 32630), (685, 26104), (1004, 17810), (1096, 16315), (1255, 14248), (1370, 13052), (1781, 10040), (2008, 8905), (2510, 7124), (2740, 6526), (3263, 5480), (3562, 5020)]