81388888

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{271}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 181739520

約数和(自身を除く): 100350632

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 173, 217, 248, 271, 346, 434, 542, 692, 868, 1084, 1211, 1384, 1736, 1897, 2168, 2422, 3794, 4844, 5363, 7588, 8401, 9688, 10726, 15176, 16802, 21452, 33604, 37541, 42904, 46883, 58807, 67208, 75082, 93766, 117614, 150164, 187532, 235228, 300328, 328181, 375064, 470456, 656362, 1312724, 1453373, 2625448, 2906746, 5813492, 10173611, 11626984, 20347222, 40694444, 81388888]

約数ペア:

[(1, 81388888), (2, 40694444), (4, 20347222), (7, 11626984), (8, 10173611), (14, 5813492), (28, 2906746), (31, 2625448), (56, 1453373), (62, 1312724), (124, 656362), (173, 470456), (217, 375064), (248, 328181), (271, 300328), (346, 235228), (434, 187532), (542, 150164), (692, 117614), (868, 93766), (1084, 75082), (1211, 67208), (1384, 58807), (1736, 46883), (1897, 42904), (2168, 37541), (2422, 33604), (3794, 21452), (4844, 16802), (5363, 15176), (7588, 10726), (8401, 9688)]