20385765

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 37702080

約数和(自身を除く): 17316315

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 113, 171, 211, 285, 339, 565, 633, 855, 1017, 1055, 1695, 1899, 2147, 3165, 4009, 5085, 6441, 9495, 10735, 12027, 19323, 20045, 23843, 32205, 36081, 60135, 71529, 96615, 119215, 180405, 214587, 357645, 453017, 1072935, 1359051, 2265085, 4077153, 6795255, 20385765]

約数ペア:

[(1, 20385765), (3, 6795255), (5, 4077153), (9, 2265085), (15, 1359051), (19, 1072935), (45, 453017), (57, 357645), (95, 214587), (113, 180405), (171, 119215), (211, 96615), (285, 71529), (339, 60135), (565, 36081), (633, 32205), (855, 23843), (1017, 20045), (1055, 19323), (1695, 12027), (1899, 10735), (2147, 9495), (3165, 6441), (4009, 5085)]