20945205

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6947}}^1$

素因数の和:7025

約数の個数: 24

約数和(自身を含む): 36852192

約数和(自身を除く): 15906987

約数列:

[1, 3, 5, 9, 15, 45, 67, 201, 335, 603, 1005, 3015, 6947, 20841, 34735, 62523, 104205, 312615, 465449, 1396347, 2327245, 4189041, 6981735, 20945205]

約数ペア:

[(1, 20945205), (3, 6981735), (5, 4189041), (9, 2327245), (15, 1396347), (45, 465449), (67, 312615), (201, 104205), (335, 62523), (603, 34735), (1005, 20841), (3015, 6947)]