21009770

素因数分解:

$2^1\times 5^1\times {\mathrm{739}}^1\times {\mathrm{2843}}^1$

素因数の和:3589

約数の個数: 16

約数和(自身を含む): 37882080

約数和(自身を除く): 16872310

約数列:

[1, 2, 5, 10, 739, 1478, 2843, 3695, 5686, 7390, 14215, 28430, 2100977, 4201954, 10504885, 21009770]

約数ペア:

[(1, 21009770), (2, 10504885), (5, 4201954), (10, 2100977), (739, 28430), (1478, 14215), (2843, 7390), (3695, 5686)]