984375

素因数分解:

$3^2\times 5^6\times 7^1$

素因数の和:43

約数の個数: 42

約数和(自身を含む): 2031224

約数和(自身を除く): 1046849

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 625, 875, 1125, 1575, 1875, 2625, 3125, 4375, 5625, 7875, 9375, 13125, 15625, 21875, 28125, 39375, 46875, 65625, 109375, 140625, 196875, 328125, 984375]

約数ペア:

[(1, 984375), (3, 328125), (5, 196875), (7, 140625), (9, 109375), (15, 65625), (21, 46875), (25, 39375), (35, 28125), (45, 21875), (63, 15625), (75, 13125), (105, 9375), (125, 7875), (175, 5625), (225, 4375), (315, 3125), (375, 2625), (525, 1875), (625, 1575), (875, 1125)]