21997664

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{52879}}^1$

素因数の和:52902

約数の個数: 24

約数和(自身を含む): 46640160

約数和(自身を除く): 24642496

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 52879, 105758, 211516, 423032, 687427, 846064, 1374854, 1692128, 2749708, 5499416, 10998832, 21997664]

約数ペア:

[(1, 21997664), (2, 10998832), (4, 5499416), (8, 2749708), (13, 1692128), (16, 1374854), (26, 846064), (32, 687427), (52, 423032), (104, 211516), (208, 105758), (416, 52879)]