18086720

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1949}}^1$

素因数の和:1995

約数の個数: 56

約数和(自身を含む): 44577000

約数和(自身を除く): 26490280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 1949, 2320, 3898, 4640, 7796, 9280, 9745, 15592, 19490, 31184, 38980, 56521, 62368, 77960, 113042, 124736, 155920, 226084, 282605, 311840, 452168, 565210, 623680, 904336, 1130420, 1808672, 2260840, 3617344, 4521680, 9043360, 18086720]

約数ペア:

[(1, 18086720), (2, 9043360), (4, 4521680), (5, 3617344), (8, 2260840), (10, 1808672), (16, 1130420), (20, 904336), (29, 623680), (32, 565210), (40, 452168), (58, 311840), (64, 282605), (80, 226084), (116, 155920), (145, 124736), (160, 113042), (232, 77960), (290, 62368), (320, 56521), (464, 38980), (580, 31184), (928, 19490), (1160, 15592), (1856, 9745), (1949, 9280), (2320, 7796), (3898, 4640)]