21531992

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1181}}^1$

素因数の和:1283

約数の個数: 32

約数和(自身を含む): 42126480

約数和(自身を除く): 20594488

約数列:

[1, 2, 4, 8, 43, 53, 86, 106, 172, 212, 344, 424, 1181, 2279, 2362, 4558, 4724, 9116, 9448, 18232, 50783, 62593, 101566, 125186, 203132, 250372, 406264, 500744, 2691499, 5382998, 10765996, 21531992]

約数ペア:

[(1, 21531992), (2, 10765996), (4, 5382998), (8, 2691499), (43, 500744), (53, 406264), (86, 250372), (106, 203132), (172, 125186), (212, 101566), (344, 62593), (424, 50783), (1181, 18232), (2279, 9448), (2362, 9116), (4558, 4724)]