64640980

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{68767}}^1$

素因数の和:68823

約数の個数: 24

約数和(自身を含む): 138636288

約数和(自身を除く): 73995308

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 68767, 137534, 275068, 343835, 687670, 1375340, 3232049, 6464098, 12928196, 16160245, 32320490, 64640980]

約数ペア:

[(1, 64640980), (2, 32320490), (4, 16160245), (5, 12928196), (10, 6464098), (20, 3232049), (47, 1375340), (94, 687670), (188, 343835), (235, 275068), (470, 137534), (940, 68767)]