20428220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60083}}^1$

素因数の和:60109

約数の個数: 24

約数和(自身を含む): 45423504

約数和(自身を除く): 24995284

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60083, 120166, 240332, 300415, 600830, 1021411, 1201660, 2042822, 4085644, 5107055, 10214110, 20428220]

約数ペア:

[(1, 20428220), (2, 10214110), (4, 5107055), (5, 4085644), (10, 2042822), (17, 1201660), (20, 1021411), (34, 600830), (68, 300415), (85, 240332), (170, 120166), (340, 60083)]