19161980

素因数分解:

$2^2\times 5^1\times {\mathrm{761}}^1\times {\mathrm{1259}}^1$

素因数の和:2029

約数の個数: 24

約数和(自身を含む): 40325040

約数和(自身を除く): 21163060

約数列:

[1, 2, 4, 5, 10, 20, 761, 1259, 1522, 2518, 3044, 3805, 5036, 6295, 7610, 12590, 15220, 25180, 958099, 1916198, 3832396, 4790495, 9580990, 19161980]

約数ペア:

[(1, 19161980), (2, 9580990), (4, 4790495), (5, 3832396), (10, 1916198), (20, 958099), (761, 25180), (1259, 15220), (1522, 12590), (2518, 7610), (3044, 6295), (3805, 5036)]