81808025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1667}}^1$

素因数の和:1841

約数の個数: 24

約数和(自身を含む): 110034624

約数和(自身を除く): 28226599

約数列:

[1, 5, 13, 25, 65, 151, 325, 755, 1667, 1963, 3775, 8335, 9815, 21671, 41675, 49075, 108355, 251717, 541775, 1258585, 3272321, 6292925, 16361605, 81808025]

約数ペア:

[(1, 81808025), (5, 16361605), (13, 6292925), (25, 3272321), (65, 1258585), (151, 541775), (325, 251717), (755, 108355), (1667, 49075), (1963, 41675), (3775, 21671), (8335, 9815)]