66509680

素因数分解:

$2^4\times 5^1\times {\mathrm{831371}}^1$

素因数の和:831384

約数の個数: 20

約数和(自身を含む): 154635192

約数和(自身を除く): 88125512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 831371, 1662742, 3325484, 4156855, 6650968, 8313710, 13301936, 16627420, 33254840, 66509680]

約数ペア:

[(1, 66509680), (2, 33254840), (4, 16627420), (5, 13301936), (8, 8313710), (10, 6650968), (16, 4156855), (20, 3325484), (40, 1662742), (80, 831371)]