81231279

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1\times {\mathrm{991}}^1$

素因数の和:1390

約数の個数: 16

約数和(自身を含む): 109992960

約数和(自身を除く): 28761681

約数列:

[1, 3, 89, 267, 307, 921, 991, 2973, 27323, 81969, 88199, 264597, 304237, 912711, 27077093, 81231279]

約数ペア:

[(1, 81231279), (3, 27077093), (89, 912711), (267, 304237), (307, 264597), (921, 88199), (991, 81969), (2973, 27323)]