21001274

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{40543}}^1$

素因数の和:40589

約数の個数: 16

約数和(自身を含む): 36976128

約数和(自身を除く): 15974854

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 40543, 81086, 283801, 567602, 1500091, 3000182, 10500637, 21001274]

約数ペア:

[(1, 21001274), (2, 10500637), (7, 3000182), (14, 1500091), (37, 567602), (74, 283801), (259, 81086), (518, 40543)]