257581808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{31139}}^1$

素因数の和:31205

約数の個数: 40

約数和(自身を含む): 556035840

約数和(自身を除く): 298454032

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 4136, 8272, 31139, 62278, 124556, 249112, 342529, 498224, 685058, 1370116, 1463533, 2740232, 2927066, 5480464, 5854132, 11708264, 16098863, 23416528, 32197726, 64395452, 128790904, 257581808]

約数ペア:

[(1, 257581808), (2, 128790904), (4, 64395452), (8, 32197726), (11, 23416528), (16, 16098863), (22, 11708264), (44, 5854132), (47, 5480464), (88, 2927066), (94, 2740232), (176, 1463533), (188, 1370116), (376, 685058), (517, 498224), (752, 342529), (1034, 249112), (2068, 124556), (4136, 62278), (8272, 31139)]