20381908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{1151}}^1$

素因数の和:1407

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 17357612

約数列:

[1, 2, 4, 19, 38, 76, 233, 466, 932, 1151, 2302, 4427, 4604, 8854, 17708, 21869, 43738, 87476, 268183, 536366, 1072732, 5095477, 10190954, 20381908]

約数ペア:

[(1, 20381908), (2, 10190954), (4, 5095477), (19, 1072732), (38, 536366), (76, 268183), (233, 87476), (466, 43738), (932, 21869), (1151, 17708), (2302, 8854), (4427, 4604)]