991984

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:553

約数の個数: 40

約数和(自身を含む): 2330208

約数和(自身を除く): 1338224

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 521, 952, 1042, 1904, 2084, 3647, 4168, 7294, 8336, 8857, 14588, 17714, 29176, 35428, 58352, 61999, 70856, 123998, 141712, 247996, 495992, 991984]

約数ペア:

[(1, 991984), (2, 495992), (4, 247996), (7, 141712), (8, 123998), (14, 70856), (16, 61999), (17, 58352), (28, 35428), (34, 29176), (56, 17714), (68, 14588), (112, 8857), (119, 8336), (136, 7294), (238, 4168), (272, 3647), (476, 2084), (521, 1904), (952, 1042)]