19148680

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2003}}^1$

素因数の和:2253

約数の個数: 32

約数和(自身を含む): 43286400

約数和(自身を除く): 24137720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2003, 2390, 4006, 4780, 8012, 9560, 10015, 16024, 20030, 40060, 80120, 478717, 957434, 1914868, 2393585, 3829736, 4787170, 9574340, 19148680]

約数ペア:

[(1, 19148680), (2, 9574340), (4, 4787170), (5, 3829736), (8, 2393585), (10, 1914868), (20, 957434), (40, 478717), (239, 80120), (478, 40060), (956, 20030), (1195, 16024), (1912, 10015), (2003, 9560), (2390, 8012), (4006, 4780)]