18065720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5717}}^1$

素因数の和:5807

約数の個数: 32

約数和(自身を含む): 41169600

約数和(自身を除く): 23103880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 5717, 11434, 22868, 28585, 45736, 57170, 114340, 228680, 451643, 903286, 1806572, 2258215, 3613144, 4516430, 9032860, 18065720]

約数ペア:

[(1, 18065720), (2, 9032860), (4, 4516430), (5, 3613144), (8, 2258215), (10, 1806572), (20, 903286), (40, 451643), (79, 228680), (158, 114340), (316, 57170), (395, 45736), (632, 28585), (790, 22868), (1580, 11434), (3160, 5717)]