19881141

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20143}}^1$

素因数の和:20200

約数の個数: 16

約数和(自身を含む): 30941184

約数和(自身を除く): 11060043

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20143, 60429, 141001, 423003, 946721, 2840163, 6627047, 19881141]

約数ペア:

[(1, 19881141), (3, 6627047), (7, 2840163), (21, 946721), (47, 423003), (141, 141001), (329, 60429), (987, 20143)]