39972760

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1559}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 90136800

約数和(自身を除く): 50164040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 1559, 2564, 3118, 3205, 5128, 6236, 6410, 7795, 12472, 12820, 15590, 25640, 31180, 62360, 999319, 1998638, 3997276, 4996595, 7994552, 9993190, 19986380, 39972760]

約数ペア:

[(1, 39972760), (2, 19986380), (4, 9993190), (5, 7994552), (8, 4996595), (10, 3997276), (20, 1998638), (40, 999319), (641, 62360), (1282, 31180), (1559, 25640), (2564, 15590), (3118, 12820), (3205, 12472), (5128, 7795), (6236, 6410)]