21836620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83987}}^1$

素因数の和:84009

約数の個数: 24

約数和(自身を含む): 49384944

約数和(自身を除く): 27548324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83987, 167974, 335948, 419935, 839870, 1091831, 1679740, 2183662, 4367324, 5459155, 10918310, 21836620]

約数ペア:

[(1, 21836620), (2, 10918310), (4, 5459155), (5, 4367324), (10, 2183662), (13, 1679740), (20, 1091831), (26, 839870), (52, 419935), (65, 335948), (130, 167974), (260, 83987)]