21087625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{683}}^1$

素因数の和:730

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 8789495

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 247, 325, 475, 683, 1235, 1625, 2375, 3415, 6175, 8879, 12977, 17075, 30875, 44395, 64885, 85375, 168701, 221975, 324425, 843505, 1109875, 1622125, 4217525, 21087625]

約数ペア:

[(1, 21087625), (5, 4217525), (13, 1622125), (19, 1109875), (25, 843505), (65, 324425), (95, 221975), (125, 168701), (247, 85375), (325, 64885), (475, 44395), (683, 30875), (1235, 17075), (1625, 12977), (2375, 8879), (3415, 6175)]