21916412

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 23618308

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 109, 167, 172, 218, 301, 334, 436, 602, 668, 763, 1169, 1204, 1526, 2338, 3052, 4676, 4687, 7181, 9374, 14362, 18203, 18748, 28724, 32809, 36406, 50267, 65618, 72812, 100534, 127421, 131236, 201068, 254842, 509684, 782729, 1565458, 3130916, 5479103, 10958206, 21916412]

約数ペア:

[(1, 21916412), (2, 10958206), (4, 5479103), (7, 3130916), (14, 1565458), (28, 782729), (43, 509684), (86, 254842), (109, 201068), (167, 131236), (172, 127421), (218, 100534), (301, 72812), (334, 65618), (436, 50267), (602, 36406), (668, 32809), (763, 28724), (1169, 18748), (1204, 18203), (1526, 14362), (2338, 9374), (3052, 7181), (4676, 4687)]