81404912

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{221209}}^1$

素因数の和:221240

約数の個数: 20

約数和(自身を含む): 164580240

約数和(自身を除く): 83175328

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 221209, 442418, 884836, 1769672, 3539344, 5087807, 10175614, 20351228, 40702456, 81404912]

約数ペア:

[(1, 81404912), (2, 40702456), (4, 20351228), (8, 10175614), (16, 5087807), (23, 3539344), (46, 1769672), (92, 884836), (184, 442418), (368, 221209)]