8990990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{599}}^1$

素因数の和:704

約数の個数: 32

約数和(自身を含む): 17280000

約数和(自身を除く): 8289010

約数列:

[1, 2, 5, 10, 19, 38, 79, 95, 158, 190, 395, 599, 790, 1198, 1501, 2995, 3002, 5990, 7505, 11381, 15010, 22762, 47321, 56905, 94642, 113810, 236605, 473210, 899099, 1798198, 4495495, 8990990]

約数ペア:

[(1, 8990990), (2, 4495495), (5, 1798198), (10, 899099), (19, 473210), (38, 236605), (79, 113810), (95, 94642), (158, 56905), (190, 47321), (395, 22762), (599, 15010), (790, 11381), (1198, 7505), (1501, 5990), (2995, 3002)]