28171975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5099}}^1$

素因数の和:5139

約数の個数: 24

約数和(自身を含む): 39841200

約数和(自身を除く): 11669225

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 5099, 5525, 25495, 66287, 86683, 127475, 331435, 433415, 1126879, 1657175, 2167075, 5634395, 28171975]

約数ペア:

[(1, 28171975), (5, 5634395), (13, 2167075), (17, 1657175), (25, 1126879), (65, 433415), (85, 331435), (221, 127475), (325, 86683), (425, 66287), (1105, 25495), (5099, 5525)]