18885880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36319}}^1$

素因数の和:36343

約数の個数: 32

約数和(自身を含む): 45763200

約数和(自身を除く): 26877320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 36319, 72638, 145276, 181595, 290552, 363190, 472147, 726380, 944294, 1452760, 1888588, 2360735, 3777176, 4721470, 9442940, 18885880]

約数ペア:

[(1, 18885880), (2, 9442940), (4, 4721470), (5, 3777176), (8, 2360735), (10, 1888588), (13, 1452760), (20, 944294), (26, 726380), (40, 472147), (52, 363190), (65, 290552), (104, 181595), (130, 145276), (260, 72638), (520, 36319)]