217371505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{145399}}^1$

素因数の和:145440

約数の個数: 16

約数和(自身を含む): 293126400

約数和(自身を除く): 75754895

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 145399, 726995, 1890187, 3344177, 9450935, 16720885, 43474301, 217371505]

約数ペア:

[(1, 217371505), (5, 43474301), (13, 16720885), (23, 9450935), (65, 3344177), (115, 1890187), (299, 726995), (1495, 145399)]