1285685720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1481}}^1\times {\mathrm{1973}}^1$

素因数の和:3476

約数の個数: 64

約数和(自身を含む): 3159505440

約数和(自身を除く): 1873819720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1481, 1973, 2962, 3946, 5924, 7405, 7892, 9865, 11848, 14810, 15784, 16291, 19730, 21703, 29620, 32582, 39460, 43406, 59240, 65164, 78920, 81455, 86812, 108515, 130328, 162910, 173624, 217030, 325820, 434060, 651640, 868120, 2922013, 5844026, 11688052, 14610065, 23376104, 29220130, 32142143, 58440260, 64284286, 116880520, 128568572, 160710715, 257137144, 321421430, 642842860, 1285685720]

約数ペア:

[(1, 1285685720), (2, 642842860), (4, 321421430), (5, 257137144), (8, 160710715), (10, 128568572), (11, 116880520), (20, 64284286), (22, 58440260), (40, 32142143), (44, 29220130), (55, 23376104), (88, 14610065), (110, 11688052), (220, 5844026), (440, 2922013), (1481, 868120), (1973, 651640), (2962, 434060), (3946, 325820), (5924, 217030), (7405, 173624), (7892, 162910), (9865, 130328), (11848, 108515), (14810, 86812), (15784, 81455), (16291, 78920), (19730, 65164), (21703, 59240), (29620, 43406), (32582, 39460)]