21426156940

素因数分解:

$2^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{2872139}}^1$

素因数の和:2872521

約数の個数: 24

約数和(自身を含む): 45115575120

約数和(自身を除く): 23689418180

約数列:

[1, 2, 4, 5, 10, 20, 373, 746, 1492, 1865, 3730, 7460, 2872139, 5744278, 11488556, 14360695, 28721390, 57442780, 1071307847, 2142615694, 4285231388, 5356539235, 10713078470, 21426156940]

約数ペア:

[(1, 21426156940), (2, 10713078470), (4, 5356539235), (5, 4285231388), (10, 2142615694), (20, 1071307847), (373, 57442780), (746, 28721390), (1492, 14360695), (1865, 11488556), (3730, 5744278), (7460, 2872139)]