166317860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1\times {\mathrm{419}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 355622400

約数和(自身を除く): 189304540

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 223, 356, 419, 445, 446, 838, 890, 892, 1115, 1676, 1780, 2095, 2230, 4190, 4460, 8380, 19847, 37291, 39694, 74582, 79388, 93437, 99235, 149164, 186455, 186874, 198470, 372910, 373748, 396940, 467185, 745820, 934370, 1868740, 8315893, 16631786, 33263572, 41579465, 83158930, 166317860]

約数ペア:

[(1, 166317860), (2, 83158930), (4, 41579465), (5, 33263572), (10, 16631786), (20, 8315893), (89, 1868740), (178, 934370), (223, 745820), (356, 467185), (419, 396940), (445, 373748), (446, 372910), (838, 198470), (890, 186874), (892, 186455), (1115, 149164), (1676, 99235), (1780, 93437), (2095, 79388), (2230, 74582), (4190, 39694), (4460, 37291), (8380, 19847)]