18513320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1787}}^1$

素因数の和:1842

約数の個数: 64

約数和(自身を含む): 48919680

約数和(自身を除く): 30406360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1787, 2072, 2590, 3574, 5180, 7148, 8935, 10360, 12509, 14296, 17870, 25018, 35740, 50036, 62545, 66119, 71480, 100072, 125090, 132238, 250180, 264476, 330595, 462833, 500360, 528952, 661190, 925666, 1322380, 1851332, 2314165, 2644760, 3702664, 4628330, 9256660, 18513320]

約数ペア:

[(1, 18513320), (2, 9256660), (4, 4628330), (5, 3702664), (7, 2644760), (8, 2314165), (10, 1851332), (14, 1322380), (20, 925666), (28, 661190), (35, 528952), (37, 500360), (40, 462833), (56, 330595), (70, 264476), (74, 250180), (140, 132238), (148, 125090), (185, 100072), (259, 71480), (280, 66119), (296, 62545), (370, 50036), (518, 35740), (740, 25018), (1036, 17870), (1295, 14296), (1480, 12509), (1787, 10360), (2072, 8935), (2590, 7148), (3574, 5180)]