13220285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 18385920

約数和(自身を除く): 5165635

約数列:

[1, 5, 13, 23, 37, 65, 115, 185, 239, 299, 481, 851, 1195, 1495, 2405, 3107, 4255, 5497, 8843, 11063, 15535, 27485, 44215, 55315, 71461, 114959, 203389, 357305, 574795, 1016945, 2644057, 13220285]

約数ペア:

[(1, 13220285), (5, 2644057), (13, 1016945), (23, 574795), (37, 357305), (65, 203389), (115, 114959), (185, 71461), (239, 55315), (299, 44215), (481, 27485), (851, 15535), (1195, 11063), (1495, 8843), (2405, 5497), (3107, 4255)]