21502585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{757}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 30562560

約数和(自身を除く): 9059975

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 757, 1235, 1495, 2185, 3785, 5681, 9841, 14383, 17411, 28405, 49205, 71915, 87055, 186979, 226343, 330809, 934895, 1131715, 1654045, 4300517, 21502585]

約数ペア:

[(1, 21502585), (5, 4300517), (13, 1654045), (19, 1131715), (23, 934895), (65, 330809), (95, 226343), (115, 186979), (247, 87055), (299, 71915), (437, 49205), (757, 28405), (1235, 17411), (1495, 14383), (2185, 9841), (3785, 5681)]