27660980

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{3449}}^1$

素因数の和:3859

約数の個数: 24

約数和(自身を含む): 58249800

約数和(自身を除く): 30588820

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 3449, 4010, 6898, 8020, 13796, 17245, 34490, 68980, 1383049, 2766098, 5532196, 6915245, 13830490, 27660980]

約数ペア:

[(1, 27660980), (2, 13830490), (4, 6915245), (5, 5532196), (10, 2766098), (20, 1383049), (401, 68980), (802, 34490), (1604, 17245), (2005, 13796), (3449, 8020), (4010, 6898)]