16781375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:500

約数の個数: 32

約数和(自身を含む): 23587200

約数和(自身を除く): 6805825

約数列:

[1, 5, 13, 23, 25, 65, 115, 125, 299, 325, 449, 575, 1495, 1625, 2245, 2875, 5837, 7475, 10327, 11225, 29185, 37375, 51635, 56125, 134251, 145925, 258175, 671255, 729625, 1290875, 3356275, 16781375]

約数ペア:

[(1, 16781375), (5, 3356275), (13, 1290875), (23, 729625), (25, 671255), (65, 258175), (115, 145925), (125, 134251), (299, 56125), (325, 51635), (449, 37375), (575, 29185), (1495, 11225), (1625, 10327), (2245, 7475), (2875, 5837)]