138266980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{68449}}^1$

素因数の和:68559

約数の個数: 24

約数和(自身を含む): 293239800

約数和(自身を除く): 154972820

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 68449, 136898, 273796, 342245, 684490, 1368980, 6913349, 13826698, 27653396, 34566745, 69133490, 138266980]

約数ペア:

[(1, 138266980), (2, 69133490), (4, 34566745), (5, 27653396), (10, 13826698), (20, 6913349), (101, 1368980), (202, 684490), (404, 342245), (505, 273796), (1010, 136898), (2020, 68449)]