81538444

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{120619}}^1$

素因数の和:120649

約数の個数: 18

約数和(自身を含む): 154514220

約数和(自身を除く): 72975776

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 120619, 241238, 482476, 1568047, 3136094, 6272188, 20384611, 40769222, 81538444]

約数ペア:

[(1, 81538444), (2, 40769222), (4, 20384611), (13, 6272188), (26, 3136094), (52, 1568047), (169, 482476), (338, 241238), (676, 120619)]