20856880025

素因数分解:

$5^2\times {\mathrm{619}}^1\times {\mathrm{661}}^1\times {\mathrm{2039}}^1$

素因数の和:3329

約数の個数: 24

約数和(自身を含む): 25956225600

約数和(自身を除く): 5099345575

約数列:

[1, 5, 25, 619, 661, 2039, 3095, 3305, 10195, 15475, 16525, 50975, 409159, 1262141, 1347779, 2045795, 6310705, 6738895, 10228975, 31553525, 33694475, 834275201, 4171376005, 20856880025]

約数ペア:

[(1, 20856880025), (5, 4171376005), (25, 834275201), (619, 33694475), (661, 31553525), (2039, 10228975), (3095, 6738895), (3305, 6310705), (10195, 2045795), (15475, 1347779), (16525, 1262141), (50975, 409159)]