81220912

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{220709}}^1$

素因数の和:220740

約数の個数: 20

約数和(自身を含む): 164208240

約数和(自身を除く): 82987328

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 220709, 441418, 882836, 1765672, 3531344, 5076307, 10152614, 20305228, 40610456, 81220912]

約数ペア:

[(1, 81220912), (2, 40610456), (4, 20305228), (8, 10152614), (16, 5076307), (23, 3531344), (46, 1765672), (92, 882836), (184, 441418), (368, 220709)]