20975744

素因数分解:

$2^7\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 44341440

約数和(自身を除く): 23365696

約数列:

[1, 2, 4, 8, 16, 32, 37, 43, 64, 74, 86, 103, 128, 148, 172, 206, 296, 344, 412, 592, 688, 824, 1184, 1376, 1591, 1648, 2368, 2752, 3182, 3296, 3811, 4429, 4736, 5504, 6364, 6592, 7622, 8858, 12728, 13184, 15244, 17716, 25456, 30488, 35432, 50912, 60976, 70864, 101824, 121952, 141728, 163873, 203648, 243904, 283456, 327746, 487808, 566912, 655492, 1310984, 2621968, 5243936, 10487872, 20975744]

約数ペア:

[(1, 20975744), (2, 10487872), (4, 5243936), (8, 2621968), (16, 1310984), (32, 655492), (37, 566912), (43, 487808), (64, 327746), (74, 283456), (86, 243904), (103, 203648), (128, 163873), (148, 141728), (172, 121952), (206, 101824), (296, 70864), (344, 60976), (412, 50912), (592, 35432), (688, 30488), (824, 25456), (1184, 17716), (1376, 15244), (1591, 13184), (1648, 12728), (2368, 8858), (2752, 7622), (3182, 6592), (3296, 6364), (3811, 5504), (4429, 4736)]