19820990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2129}}^1$

素因数の和:2169

約数の個数: 48

約数和(自身を含む): 43707600

約数和(自身を除く): 23886610

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2129, 4258, 4655, 9310, 10645, 14903, 21290, 29806, 40451, 74515, 80902, 104321, 149030, 202255, 208642, 283157, 404510, 521605, 566314, 1043210, 1415785, 1982099, 2831570, 3964198, 9910495, 19820990]

約数ペア:

[(1, 19820990), (2, 9910495), (5, 3964198), (7, 2831570), (10, 1982099), (14, 1415785), (19, 1043210), (35, 566314), (38, 521605), (49, 404510), (70, 283157), (95, 208642), (98, 202255), (133, 149030), (190, 104321), (245, 80902), (266, 74515), (490, 40451), (665, 29806), (931, 21290), (1330, 14903), (1862, 10645), (2129, 9310), (4258, 4655)]