21998178

素因数分解:

$2^1\times 3^2\times {\mathrm{127}}^1\times {\mathrm{9623}}^1$

素因数の和:9758

約数の個数: 24

約数和(自身を含む): 48043008

約数和(自身を除く): 26044830

約数列:

[1, 2, 3, 6, 9, 18, 127, 254, 381, 762, 1143, 2286, 9623, 19246, 28869, 57738, 86607, 173214, 1222121, 2444242, 3666363, 7332726, 10999089, 21998178]

約数ペア:

[(1, 21998178), (2, 10999089), (3, 7332726), (6, 3666363), (9, 2444242), (18, 1222121), (127, 173214), (254, 86607), (381, 57738), (762, 28869), (1143, 19246), (2286, 9623)]