20723725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 28257120

約数和(自身を除く): 7533395

約数列:

[1, 5, 11, 25, 55, 179, 275, 421, 895, 1969, 2105, 4475, 4631, 9845, 10525, 23155, 49225, 75359, 115775, 376795, 828949, 1883975, 4144745, 20723725]

約数ペア:

[(1, 20723725), (5, 4144745), (11, 1883975), (25, 828949), (55, 376795), (179, 115775), (275, 75359), (421, 49225), (895, 23155), (1969, 10525), (2105, 9845), (4475, 4631)]