21109696

素因数分解:

$2^6\times {\mathrm{499}}^1\times {\mathrm{661}}^1$

素因数の和:1172

約数の個数: 28

約数和(自身を含む): 42037000

約数和(自身を除く): 20927304

約数列:

[1, 2, 4, 8, 16, 32, 64, 499, 661, 998, 1322, 1996, 2644, 3992, 5288, 7984, 10576, 15968, 21152, 31936, 42304, 329839, 659678, 1319356, 2638712, 5277424, 10554848, 21109696]

約数ペア:

[(1, 21109696), (2, 10554848), (4, 5277424), (8, 2638712), (16, 1319356), (32, 659678), (64, 329839), (499, 42304), (661, 31936), (998, 21152), (1322, 15968), (1996, 10576), (2644, 7984), (3992, 5288)]