18371320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1036

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 27818120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 971, 1720, 1892, 1942, 2365, 3784, 3884, 4730, 4855, 7768, 9460, 9710, 10681, 18920, 19420, 21362, 38840, 41753, 42724, 53405, 83506, 85448, 106810, 167012, 208765, 213620, 334024, 417530, 427240, 459283, 835060, 918566, 1670120, 1837132, 2296415, 3674264, 4592830, 9185660, 18371320]

約数ペア:

[(1, 18371320), (2, 9185660), (4, 4592830), (5, 3674264), (8, 2296415), (10, 1837132), (11, 1670120), (20, 918566), (22, 835060), (40, 459283), (43, 427240), (44, 417530), (55, 334024), (86, 213620), (88, 208765), (110, 167012), (172, 106810), (215, 85448), (220, 83506), (344, 53405), (430, 42724), (440, 41753), (473, 38840), (860, 21362), (946, 19420), (971, 18920), (1720, 10681), (1892, 9710), (1942, 9460), (2365, 7768), (3784, 4855), (3884, 4730)]