18995275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{277}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 25578224

約数和(自身を除く): 6582949

約数列:

[1, 5, 13, 25, 65, 211, 277, 325, 1055, 1385, 2743, 3601, 5275, 6925, 13715, 18005, 58447, 68575, 90025, 292235, 759811, 1461175, 3799055, 18995275]

約数ペア:

[(1, 18995275), (5, 3799055), (13, 1461175), (25, 759811), (65, 292235), (211, 90025), (277, 68575), (325, 58447), (1055, 18005), (1385, 13715), (2743, 6925), (3601, 5275)]