19983616

素因数分解:

$2^8\times {\mathrm{251}}^1\times {\mathrm{311}}^1$

素因数の和:578

約数の個数: 36

約数和(自身を含む): 40176864

約数和(自身を除く): 20193248

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 251, 256, 311, 502, 622, 1004, 1244, 2008, 2488, 4016, 4976, 8032, 9952, 16064, 19904, 32128, 39808, 64256, 78061, 79616, 156122, 312244, 624488, 1248976, 2497952, 4995904, 9991808, 19983616]

約数ペア:

[(1, 19983616), (2, 9991808), (4, 4995904), (8, 2497952), (16, 1248976), (32, 624488), (64, 312244), (128, 156122), (251, 79616), (256, 78061), (311, 64256), (502, 39808), (622, 32128), (1004, 19904), (1244, 16064), (2008, 9952), (2488, 8032), (4016, 4976)]