18390040

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2753}}^1$

素因数の和:2931

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 23250440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 2753, 3340, 5506, 6680, 11012, 13765, 22024, 27530, 55060, 110120, 459751, 919502, 1839004, 2298755, 3678008, 4597510, 9195020, 18390040]

約数ペア:

[(1, 18390040), (2, 9195020), (4, 4597510), (5, 3678008), (8, 2298755), (10, 1839004), (20, 919502), (40, 459751), (167, 110120), (334, 55060), (668, 27530), (835, 22024), (1336, 13765), (1670, 11012), (2753, 6680), (3340, 5506)]