218364579

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{15583}}^1$

素因数の和:15768

約数の個数: 20

約数和(自身を含む): 328105536

約数和(自身を除く): 109740957

約数列:

[1, 3, 9, 27, 81, 173, 519, 1557, 4671, 14013, 15583, 46749, 140247, 420741, 1262223, 2695859, 8087577, 24262731, 72788193, 218364579]

約数ペア:

[(1, 218364579), (3, 72788193), (9, 24262731), (27, 8087577), (81, 2695859), (173, 1262223), (519, 420741), (1557, 140247), (4671, 46749), (14013, 15583)]