21081810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13259}}^1$

素因数の和:13322

約数の個数: 32

約数和(自身を含む): 51554880

約数和(自身を除く): 30473070

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13259, 26518, 39777, 66295, 79554, 132590, 198885, 397770, 702727, 1405454, 2108181, 3513635, 4216362, 7027270, 10540905, 21081810]

約数ペア:

[(1, 21081810), (2, 10540905), (3, 7027270), (5, 4216362), (6, 3513635), (10, 2108181), (15, 1405454), (30, 702727), (53, 397770), (106, 198885), (159, 132590), (265, 79554), (318, 66295), (530, 39777), (795, 26518), (1590, 13259)]