18942440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43051}}^1$

素因数の和:43073

約数の個数: 32

約数和(自身を含む): 46496160

約数和(自身を除く): 27553720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 43051, 86102, 172204, 215255, 344408, 430510, 473561, 861020, 947122, 1722040, 1894244, 2367805, 3788488, 4735610, 9471220, 18942440]

約数ペア:

[(1, 18942440), (2, 9471220), (4, 4735610), (5, 3788488), (8, 2367805), (10, 1894244), (11, 1722040), (20, 947122), (22, 861020), (40, 473561), (44, 430510), (55, 344408), (88, 215255), (110, 172204), (220, 86102), (440, 43051)]