18321875

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:90

約数の個数: 48

約数和(自身を含む): 27560736

約数和(自身を除く): 9238861

約数列:

[1, 5, 11, 13, 25, 41, 55, 65, 125, 143, 205, 275, 325, 451, 533, 625, 715, 1025, 1375, 1625, 2255, 2665, 3125, 3575, 5125, 5863, 6875, 8125, 11275, 13325, 17875, 25625, 29315, 34375, 40625, 56375, 66625, 89375, 128125, 146575, 281875, 333125, 446875, 732875, 1409375, 1665625, 3664375, 18321875]

約数ペア:

[(1, 18321875), (5, 3664375), (11, 1665625), (13, 1409375), (25, 732875), (41, 446875), (55, 333125), (65, 281875), (125, 146575), (143, 128125), (205, 89375), (275, 66625), (325, 56375), (451, 40625), (533, 34375), (625, 29315), (715, 25625), (1025, 17875), (1375, 13325), (1625, 11275), (2255, 8125), (2665, 6875), (3125, 5863), (3575, 5125)]