21965125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1931}}^1$

素因数の和:1966

約数の個数: 32

約数和(自身を含む): 33755904

約数和(自身を除く): 11790779

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 125, 175, 325, 455, 875, 1625, 1931, 2275, 9655, 11375, 13517, 25103, 48275, 67585, 125515, 175721, 241375, 337925, 627575, 878605, 1689625, 3137875, 4393025, 21965125]

約数ペア:

[(1, 21965125), (5, 4393025), (7, 3137875), (13, 1689625), (25, 878605), (35, 627575), (65, 337925), (91, 241375), (125, 175721), (175, 125515), (325, 67585), (455, 48275), (875, 25103), (1625, 13517), (1931, 11375), (2275, 9655)]