20640232

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{541}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 40975200

約数和(自身を除く): 20334968

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 251, 502, 541, 1004, 1082, 2008, 2164, 4328, 4769, 9538, 10279, 19076, 20558, 38152, 41116, 82232, 135791, 271582, 543164, 1086328, 2580029, 5160058, 10320116, 20640232]

約数ペア:

[(1, 20640232), (2, 10320116), (4, 5160058), (8, 2580029), (19, 1086328), (38, 543164), (76, 271582), (152, 135791), (251, 82232), (502, 41116), (541, 38152), (1004, 20558), (1082, 19076), (2008, 10279), (2164, 9538), (4328, 4769)]