19090480

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3361}}^1$

素因数の和:3445

約数の個数: 40

約数和(自身を含む): 45023904

約数和(自身を除く): 25933424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3361, 5680, 6722, 13444, 16805, 26888, 33610, 53776, 67220, 134440, 238631, 268880, 477262, 954524, 1193155, 1909048, 2386310, 3818096, 4772620, 9545240, 19090480]

約数ペア:

[(1, 19090480), (2, 9545240), (4, 4772620), (5, 3818096), (8, 2386310), (10, 1909048), (16, 1193155), (20, 954524), (40, 477262), (71, 268880), (80, 238631), (142, 134440), (284, 67220), (355, 53776), (568, 33610), (710, 26888), (1136, 16805), (1420, 13444), (2840, 6722), (3361, 5680)]