20509775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5737}}^1$

素因数の和:5771

約数の個数: 24

約数和(自身を含む): 29883504

約数和(自身を除く): 9373729

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 275, 325, 715, 3575, 5737, 28685, 63107, 74581, 143425, 315535, 372905, 820391, 1577675, 1864525, 4101955, 20509775]

約数ペア:

[(1, 20509775), (5, 4101955), (11, 1864525), (13, 1577675), (25, 820391), (55, 372905), (65, 315535), (143, 143425), (275, 74581), (325, 63107), (715, 28685), (3575, 5737)]