20321170

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{887}}^1$

素因数の和:1002

約数の個数: 32

約数和(自身を含む): 38361600

約数和(自身を除く): 18040430

約数列:

[1, 2, 5, 10, 29, 58, 79, 145, 158, 290, 395, 790, 887, 1774, 2291, 4435, 4582, 8870, 11455, 22910, 25723, 51446, 70073, 128615, 140146, 257230, 350365, 700730, 2032117, 4064234, 10160585, 20321170]

約数ペア:

[(1, 20321170), (2, 10160585), (5, 4064234), (10, 2032117), (29, 700730), (58, 350365), (79, 257230), (145, 140146), (158, 128615), (290, 70073), (395, 51446), (790, 25723), (887, 22910), (1774, 11455), (2291, 8870), (4435, 4582)]