19990160

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3163}}^1$

素因数の和:3255

約数の個数: 40

約数和(自身を含む): 47080320

約数和(自身を除く): 27090160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3163, 6320, 6326, 12652, 15815, 25304, 31630, 50608, 63260, 126520, 249877, 253040, 499754, 999508, 1249385, 1999016, 2498770, 3998032, 4997540, 9995080, 19990160]

約数ペア:

[(1, 19990160), (2, 9995080), (4, 4997540), (5, 3998032), (8, 2498770), (10, 1999016), (16, 1249385), (20, 999508), (40, 499754), (79, 253040), (80, 249877), (158, 126520), (316, 63260), (395, 50608), (632, 31630), (790, 25304), (1264, 15815), (1580, 12652), (3160, 6326), (3163, 6320)]