19986945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4177}}^1$

素因数の和:4225

約数の個数: 32

約数和(自身を含む): 36097920

約数和(自身を除く): 16110975

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595, 4177, 4785, 12531, 20885, 45947, 62655, 121133, 137841, 229735, 363399, 605665, 689205, 1332463, 1816995, 3997389, 6662315, 19986945]

約数ペア:

[(1, 19986945), (3, 6662315), (5, 3997389), (11, 1816995), (15, 1332463), (29, 689205), (33, 605665), (55, 363399), (87, 229735), (145, 137841), (165, 121133), (319, 62655), (435, 45947), (957, 20885), (1595, 12531), (4177, 4785)]