19694680

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{761}}^1$

素因数の和:1419

約数の個数: 32

約数和(自身を含む): 44439840

約数和(自身を除く): 24745160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 761, 1294, 1522, 2588, 3044, 3235, 3805, 5176, 6088, 6470, 7610, 12940, 15220, 25880, 30440, 492367, 984734, 1969468, 2461835, 3938936, 4923670, 9847340, 19694680]

約数ペア:

[(1, 19694680), (2, 9847340), (4, 4923670), (5, 3938936), (8, 2461835), (10, 1969468), (20, 984734), (40, 492367), (647, 30440), (761, 25880), (1294, 15220), (1522, 12940), (2588, 7610), (3044, 6470), (3235, 6088), (3805, 5176)]