20697625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 28514304

約数和(自身を除く): 7816679

約数列:

[1, 5, 13, 25, 47, 65, 125, 235, 271, 325, 611, 1175, 1355, 1625, 3055, 3523, 5875, 6775, 12737, 15275, 17615, 33875, 63685, 76375, 88075, 165581, 318425, 440375, 827905, 1592125, 4139525, 20697625]

約数ペア:

[(1, 20697625), (5, 4139525), (13, 1592125), (25, 827905), (47, 440375), (65, 318425), (125, 165581), (235, 88075), (271, 76375), (325, 63685), (611, 33875), (1175, 17615), (1355, 15275), (1625, 12737), (3055, 6775), (3523, 5875)]