20428040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26879}}^1$

素因数の和:26909

約数の個数: 32

約数和(自身を含む): 48384000

約数和(自身を除く): 27955960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26879, 53758, 107516, 134395, 215032, 268790, 510701, 537580, 1021402, 1075160, 2042804, 2553505, 4085608, 5107010, 10214020, 20428040]

約数ペア:

[(1, 20428040), (2, 10214020), (4, 5107010), (5, 4085608), (8, 2553505), (10, 2042804), (19, 1075160), (20, 1021402), (38, 537580), (40, 510701), (76, 268790), (95, 215032), (152, 134395), (190, 107516), (380, 53758), (760, 26879)]