81881320

素因数分解:

$2^3\times 5^1\times {\mathrm{619}}^1\times {\mathrm{3307}}^1$

素因数の和:3937

約数の個数: 32

約数和(自身を含む): 184586400

約数和(自身を除く): 102705080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 619, 1238, 2476, 3095, 3307, 4952, 6190, 6614, 12380, 13228, 16535, 24760, 26456, 33070, 66140, 132280, 2047033, 4094066, 8188132, 10235165, 16376264, 20470330, 40940660, 81881320]

約数ペア:

[(1, 81881320), (2, 40940660), (4, 20470330), (5, 16376264), (8, 10235165), (10, 8188132), (20, 4094066), (40, 2047033), (619, 132280), (1238, 66140), (2476, 33070), (3095, 26456), (3307, 24760), (4952, 16535), (6190, 13228), (6614, 12380)]