81421335

素因数分解:

$3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{4339}}^1$

素因数の和:4492

約数の個数: 32

約数和(自身を含む): 145824000

約数和(自身を除く): 64402665

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139, 417, 695, 1251, 2085, 3753, 4339, 6255, 13017, 18765, 21695, 39051, 65085, 117153, 195255, 585765, 603121, 1809363, 3015605, 5428089, 9046815, 16284267, 27140445, 81421335]

約数ペア:

[(1, 81421335), (3, 27140445), (5, 16284267), (9, 9046815), (15, 5428089), (27, 3015605), (45, 1809363), (135, 603121), (139, 585765), (417, 195255), (695, 117153), (1251, 65085), (2085, 39051), (3753, 21695), (4339, 18765), (6255, 13017)]