13801720

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{887}}^1$

素因数の和:1287

約数の個数: 32

約数和(自身を含む): 31168800

約数和(自身を除く): 17367080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 887, 1556, 1774, 1945, 3112, 3548, 3890, 4435, 7096, 7780, 8870, 15560, 17740, 35480, 345043, 690086, 1380172, 1725215, 2760344, 3450430, 6900860, 13801720]

約数ペア:

[(1, 13801720), (2, 6900860), (4, 3450430), (5, 2760344), (8, 1725215), (10, 1380172), (20, 690086), (40, 345043), (389, 35480), (778, 17740), (887, 15560), (1556, 8870), (1774, 7780), (1945, 7096), (3112, 4435), (3548, 3890)]