21506025

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{6101}}^1$

素因数の和:6161

約数の個数: 24

約数和(自身を含む): 36319104

約数和(自身を除く): 14813079

約数列:

[1, 3, 5, 15, 25, 47, 75, 141, 235, 705, 1175, 3525, 6101, 18303, 30505, 91515, 152525, 286747, 457575, 860241, 1433735, 4301205, 7168675, 21506025]

約数ペア:

[(1, 21506025), (3, 7168675), (5, 4301205), (15, 1433735), (25, 860241), (47, 457575), (75, 286747), (141, 152525), (235, 91515), (705, 30505), (1175, 18303), (3525, 6101)]