21730282

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7879}}^1$

素因数の和:8085

約数の個数: 16

約数和(自身を含む): 37445760

約数和(自身を除く): 15715478

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7879, 15758, 55153, 110306, 1552163, 3104326, 10865141, 21730282]

約数ペア:

[(1, 21730282), (2, 10865141), (7, 3104326), (14, 1552163), (197, 110306), (394, 55153), (1379, 15758), (2758, 7879)]