21099952

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16693}}^1$

素因数の和:16780

約数の個数: 20

約数和(自身を含む): 41401120

約数和(自身を除く): 20301168

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16693, 33386, 66772, 133544, 267088, 1318747, 2637494, 5274988, 10549976, 21099952]

約数ペア:

[(1, 21099952), (2, 10549976), (4, 5274988), (8, 2637494), (16, 1318747), (79, 267088), (158, 133544), (316, 66772), (632, 33386), (1264, 16693)]