21191954

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79669}}^1$

素因数の和:79697

約数の個数: 16

約数和(自身を含む): 38241600

約数和(自身を除く): 17049646

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 79669, 159338, 557683, 1115366, 1513711, 3027422, 10595977, 21191954]

約数ペア:

[(1, 21191954), (2, 10595977), (7, 3027422), (14, 1513711), (19, 1115366), (38, 557683), (133, 159338), (266, 79669)]