21445390

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{941}}^1$

素因数の和:1044

約数の個数: 32

約数和(自身を含む): 40287456

約数和(自身を除く): 18842066

約数列:

[1, 2, 5, 10, 43, 53, 86, 106, 215, 265, 430, 530, 941, 1882, 2279, 4558, 4705, 9410, 11395, 22790, 40463, 49873, 80926, 99746, 202315, 249365, 404630, 498730, 2144539, 4289078, 10722695, 21445390]

約数ペア:

[(1, 21445390), (2, 10722695), (5, 4289078), (10, 2144539), (43, 498730), (53, 404630), (86, 249365), (106, 202315), (215, 99746), (265, 80926), (430, 49873), (530, 40463), (941, 22790), (1882, 11395), (2279, 9410), (4558, 4705)]