128337580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1867}}^1$

素因数の和:2374

約数の個数: 48

約数和(自身を含む): 308802816

約数和(自身を除く): 180465236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 491, 982, 1867, 1964, 2455, 3437, 3734, 4910, 6874, 7468, 9335, 9820, 13069, 13748, 17185, 18670, 26138, 34370, 37340, 52276, 65345, 68740, 130690, 261380, 916697, 1833394, 3666788, 4583485, 6416879, 9166970, 12833758, 18333940, 25667516, 32084395, 64168790, 128337580]

約数ペア:

[(1, 128337580), (2, 64168790), (4, 32084395), (5, 25667516), (7, 18333940), (10, 12833758), (14, 9166970), (20, 6416879), (28, 4583485), (35, 3666788), (70, 1833394), (140, 916697), (491, 261380), (982, 130690), (1867, 68740), (1964, 65345), (2455, 52276), (3437, 37340), (3734, 34370), (4910, 26138), (6874, 18670), (7468, 17185), (9335, 13748), (9820, 13069)]