15809420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71861}}^1$

素因数の和:71881

約数の個数: 24

約数和(自身を含む): 36218448

約数和(自身を除く): 20409028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 71861, 143722, 287444, 359305, 718610, 790471, 1437220, 1580942, 3161884, 3952355, 7904710, 15809420]

約数ペア:

[(1, 15809420), (2, 7904710), (4, 3952355), (5, 3161884), (10, 1580942), (11, 1437220), (20, 790471), (22, 718610), (44, 359305), (55, 287444), (110, 143722), (220, 71861)]