21017108

素因数分解:

$2^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1171}}^1$

素因数の和:1823

約数の個数: 24

約数和(自身を含む): 42135744

約数和(自身を除く): 21118636

約数列:

[1, 2, 4, 7, 14, 28, 641, 1171, 1282, 2342, 2564, 4487, 4684, 8197, 8974, 16394, 17948, 32788, 750611, 1501222, 3002444, 5254277, 10508554, 21017108]

約数ペア:

[(1, 21017108), (2, 10508554), (4, 5254277), (7, 3002444), (14, 1501222), (28, 750611), (641, 32788), (1171, 17948), (1282, 16394), (2342, 8974), (2564, 8197), (4487, 4684)]