18984640

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1447}}^1$

素因数の和:1505

約数の個数: 56

約数和(自身を含む): 46341792

約数和(自身を除く): 27357152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1447, 1640, 2624, 2894, 3280, 5788, 6560, 7235, 11576, 13120, 14470, 23152, 28940, 46304, 57880, 59327, 92608, 115760, 118654, 231520, 237308, 296635, 463040, 474616, 593270, 949232, 1186540, 1898464, 2373080, 3796928, 4746160, 9492320, 18984640]

約数ペア:

[(1, 18984640), (2, 9492320), (4, 4746160), (5, 3796928), (8, 2373080), (10, 1898464), (16, 1186540), (20, 949232), (32, 593270), (40, 474616), (41, 463040), (64, 296635), (80, 237308), (82, 231520), (160, 118654), (164, 115760), (205, 92608), (320, 59327), (328, 57880), (410, 46304), (656, 28940), (820, 23152), (1312, 14470), (1447, 13120), (1640, 11576), (2624, 7235), (2894, 6560), (3280, 5788)]