28349680

素因数分解:

$2^4\times 5^1\times {\mathrm{354371}}^1$

素因数の和:354384

約数の個数: 20

約数和(自身を含む): 65913192

約数和(自身を除く): 37563512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354371, 708742, 1417484, 1771855, 2834968, 3543710, 5669936, 7087420, 14174840, 28349680]

約数ペア:

[(1, 28349680), (2, 14174840), (4, 7087420), (5, 5669936), (8, 3543710), (10, 2834968), (16, 1771855), (20, 1417484), (40, 708742), (80, 354371)]