81294705

素因数分解:

$3^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2143}}^1$

素因数の和:2438

約数の個数: 32

約数和(自身を含む): 145105920

約数和(自身を除く): 63811215

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 281, 843, 1405, 2143, 2529, 4215, 6429, 7587, 10715, 12645, 19287, 32145, 37935, 57861, 96435, 289305, 602183, 1806549, 3010915, 5419647, 9032745, 16258941, 27098235, 81294705]

約数ペア:

[(1, 81294705), (3, 27098235), (5, 16258941), (9, 9032745), (15, 5419647), (27, 3010915), (45, 1806549), (135, 602183), (281, 289305), (843, 96435), (1405, 57861), (2143, 37935), (2529, 32145), (4215, 19287), (6429, 12645), (7587, 10715)]