18681325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1223}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 25498368

約数和(自身を除く): 6817043

約数列:

[1, 5, 13, 25, 47, 65, 235, 325, 611, 1175, 1223, 3055, 6115, 15275, 15899, 30575, 57481, 79495, 287405, 397475, 747253, 1437025, 3736265, 18681325]

約数ペア:

[(1, 18681325), (5, 3736265), (13, 1437025), (25, 747253), (47, 397475), (65, 287405), (235, 79495), (325, 57481), (611, 30575), (1175, 15899), (1223, 15275), (3055, 6115)]