21875875

素因数分解:

$5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1087}}^1$

素因数の和:1132

約数の個数: 32

約数和(自身を含む): 32587776

約数和(自身を除く): 10711901

約数列:

[1, 5, 7, 23, 25, 35, 115, 125, 161, 175, 575, 805, 875, 1087, 2875, 4025, 5435, 7609, 20125, 25001, 27175, 38045, 125005, 135875, 175007, 190225, 625025, 875035, 951125, 3125125, 4375175, 21875875]

約数ペア:

[(1, 21875875), (5, 4375175), (7, 3125125), (23, 951125), (25, 875035), (35, 625025), (115, 190225), (125, 175007), (161, 135875), (175, 125005), (575, 38045), (805, 27175), (875, 25001), (1087, 20125), (2875, 7609), (4025, 5435)]