17820820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11279}}^1$

素因数の和:11367

約数の個数: 24

約数和(自身を含む): 37900800

約数和(自身を除く): 20079980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11279, 22558, 45116, 56395, 112790, 225580, 891041, 1782082, 3564164, 4455205, 8910410, 17820820]

約数ペア:

[(1, 17820820), (2, 8910410), (4, 4455205), (5, 3564164), (10, 1782082), (20, 891041), (79, 225580), (158, 112790), (316, 56395), (395, 45116), (790, 22558), (1580, 11279)]