81391664

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{221173}}^1$

素因数の和:221204

約数の個数: 20

約数和(自身を含む): 164553456

約数和(自身を除く): 83161792

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 221173, 442346, 884692, 1769384, 3538768, 5086979, 10173958, 20347916, 40695832, 81391664]

約数ペア:

[(1, 81391664), (2, 40695832), (4, 20347916), (8, 10173958), (16, 5086979), (23, 3538768), (46, 1769384), (92, 884692), (184, 442346), (368, 221173)]