19430440

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1847}}^1$

素因数の和:2121

約数の個数: 32

約数和(自身を含む): 43908480

約数和(自身を除く): 24478040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1847, 2104, 2630, 3694, 5260, 7388, 9235, 10520, 14776, 18470, 36940, 73880, 485761, 971522, 1943044, 2428805, 3886088, 4857610, 9715220, 19430440]

約数ペア:

[(1, 19430440), (2, 9715220), (4, 4857610), (5, 3886088), (8, 2428805), (10, 1943044), (20, 971522), (40, 485761), (263, 73880), (526, 36940), (1052, 18470), (1315, 14776), (1847, 10520), (2104, 9235), (2630, 7388), (3694, 5260)]