18441680

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{7949}}^1$

素因数の和:7991

約数の個数: 40

約数和(自身を含む): 44361000

約数和(自身を除く): 25919320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 7949, 15898, 31796, 39745, 63592, 79490, 127184, 158980, 230521, 317960, 461042, 635920, 922084, 1152605, 1844168, 2305210, 3688336, 4610420, 9220840, 18441680]

約数ペア:

[(1, 18441680), (2, 9220840), (4, 4610420), (5, 3688336), (8, 2305210), (10, 1844168), (16, 1152605), (20, 922084), (29, 635920), (40, 461042), (58, 317960), (80, 230521), (116, 158980), (145, 127184), (232, 79490), (290, 63592), (464, 39745), (580, 31796), (1160, 15898), (2320, 7949)]