28891245

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{827}}^1$

素因数の和:989

約数の個数: 32

約数和(自身を含む): 49362048

約数和(自身を除く): 20470803

約数列:

[1, 3, 5, 15, 17, 51, 85, 137, 255, 411, 685, 827, 2055, 2329, 2481, 4135, 6987, 11645, 12405, 14059, 34935, 42177, 70295, 113299, 210885, 339897, 566495, 1699485, 1926083, 5778249, 9630415, 28891245]

約数ペア:

[(1, 28891245), (3, 9630415), (5, 5778249), (15, 1926083), (17, 1699485), (51, 566495), (85, 339897), (137, 210885), (255, 113299), (411, 70295), (685, 42177), (827, 34935), (2055, 14059), (2329, 12405), (2481, 11645), (4135, 6987)]