21328790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5749}}^1$

素因数の和:5816

約数の個数: 32

約数和(自身を含む): 44712000

約数和(自身を除く): 23383210

約数列:

[1, 2, 5, 7, 10, 14, 35, 53, 70, 106, 265, 371, 530, 742, 1855, 3710, 5749, 11498, 28745, 40243, 57490, 80486, 201215, 304697, 402430, 609394, 1523485, 2132879, 3046970, 4265758, 10664395, 21328790]

約数ペア:

[(1, 21328790), (2, 10664395), (5, 4265758), (7, 3046970), (10, 2132879), (14, 1523485), (35, 609394), (53, 402430), (70, 304697), (106, 201215), (265, 80486), (371, 57490), (530, 40243), (742, 28745), (1855, 11498), (3710, 5749)]