17620720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16943}}^1$

素因数の和:16969

約数の個数: 40

約数和(自身を含む): 44122176

約数和(自身を除く): 26501456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 16943, 33886, 67772, 84715, 135544, 169430, 220259, 271088, 338860, 440518, 677720, 881036, 1101295, 1355440, 1762072, 2202590, 3524144, 4405180, 8810360, 17620720]

約数ペア:

[(1, 17620720), (2, 8810360), (4, 4405180), (5, 3524144), (8, 2202590), (10, 1762072), (13, 1355440), (16, 1101295), (20, 881036), (26, 677720), (40, 440518), (52, 338860), (65, 271088), (80, 220259), (104, 169430), (130, 135544), (208, 84715), (260, 67772), (520, 33886), (1040, 16943)]