21033080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30931}}^1$

素因数の和:30959

約数の個数: 32

約数和(自身を含む): 50109840

約数和(自身を除く): 29076760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30931, 61862, 123724, 154655, 247448, 309310, 525827, 618620, 1051654, 1237240, 2103308, 2629135, 4206616, 5258270, 10516540, 21033080]

約数ペア:

[(1, 21033080), (2, 10516540), (4, 5258270), (5, 4206616), (8, 2629135), (10, 2103308), (17, 1237240), (20, 1051654), (34, 618620), (40, 525827), (68, 309310), (85, 247448), (136, 154655), (170, 123724), (340, 61862), (680, 30931)]