18964880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{937}}^1$

素因数の和:984

約数の個数: 80

約数和(自身を含む): 50246784

約数和(自身を除く): 31281904

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 176, 184, 220, 230, 253, 368, 440, 460, 506, 880, 920, 937, 1012, 1265, 1840, 1874, 2024, 2530, 3748, 4048, 4685, 5060, 7496, 9370, 10120, 10307, 14992, 18740, 20240, 20614, 21551, 37480, 41228, 43102, 51535, 74960, 82456, 86204, 103070, 107755, 164912, 172408, 206140, 215510, 237061, 344816, 412280, 431020, 474122, 824560, 862040, 948244, 1185305, 1724080, 1896488, 2370610, 3792976, 4741220, 9482440, 18964880]

約数ペア:

[(1, 18964880), (2, 9482440), (4, 4741220), (5, 3792976), (8, 2370610), (10, 1896488), (11, 1724080), (16, 1185305), (20, 948244), (22, 862040), (23, 824560), (40, 474122), (44, 431020), (46, 412280), (55, 344816), (80, 237061), (88, 215510), (92, 206140), (110, 172408), (115, 164912), (176, 107755), (184, 103070), (220, 86204), (230, 82456), (253, 74960), (368, 51535), (440, 43102), (460, 41228), (506, 37480), (880, 21551), (920, 20614), (937, 20240), (1012, 18740), (1265, 14992), (1840, 10307), (1874, 10120), (2024, 9370), (2530, 7496), (3748, 5060), (4048, 4685)]