21392875

素因数分解:

$5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1063}}^1$

素因数の和:1108

約数の個数: 32

約数和(自身を含む): 31868928

約数和(自身を除く): 10476053

約数列:

[1, 5, 7, 23, 25, 35, 115, 125, 161, 175, 575, 805, 875, 1063, 2875, 4025, 5315, 7441, 20125, 24449, 26575, 37205, 122245, 132875, 171143, 186025, 611225, 855715, 930125, 3056125, 4278575, 21392875]

約数ペア:

[(1, 21392875), (5, 4278575), (7, 3056125), (23, 930125), (25, 855715), (35, 611225), (115, 186025), (125, 171143), (161, 132875), (175, 122245), (575, 37205), (805, 26575), (875, 24449), (1063, 20125), (2875, 7441), (4025, 5315)]