20153240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11717}}^1$

素因数の和:11771

約数の個数: 32

約数和(自身を含む): 46403280

約数和(自身を除く): 26250040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11717, 23434, 46868, 58585, 93736, 117170, 234340, 468680, 503831, 1007662, 2015324, 2519155, 4030648, 5038310, 10076620, 20153240]

約数ペア:

[(1, 20153240), (2, 10076620), (4, 5038310), (5, 4030648), (8, 2519155), (10, 2015324), (20, 1007662), (40, 503831), (43, 468680), (86, 234340), (172, 117170), (215, 93736), (344, 58585), (430, 46868), (860, 23434), (1720, 11717)]