81643305

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1\times {\mathrm{521}}^1$

素因数の和:897

約数の個数: 32

約数和(自身を含む): 135502848

約数和(自身を除く): 53859543

約数列:

[1, 3, 5, 15, 31, 93, 155, 337, 465, 521, 1011, 1563, 1685, 2605, 5055, 7815, 10447, 16151, 31341, 48453, 52235, 80755, 156705, 175577, 242265, 526731, 877885, 2633655, 5442887, 16328661, 27214435, 81643305]

約数ペア:

[(1, 81643305), (3, 27214435), (5, 16328661), (15, 5442887), (31, 2633655), (93, 877885), (155, 526731), (337, 242265), (465, 175577), (521, 156705), (1011, 80755), (1563, 52235), (1685, 48453), (2605, 31341), (5055, 16151), (7815, 10447)]