21454840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48761}}^1$

素因数の和:48783

約数の個数: 32

約数和(自身を含む): 52662960

約数和(自身を除く): 31208120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48761, 97522, 195044, 243805, 390088, 487610, 536371, 975220, 1072742, 1950440, 2145484, 2681855, 4290968, 5363710, 10727420, 21454840]

約数ペア:

[(1, 21454840), (2, 10727420), (4, 5363710), (5, 4290968), (8, 2681855), (10, 2145484), (11, 1950440), (20, 1072742), (22, 975220), (40, 536371), (44, 487610), (55, 390088), (88, 243805), (110, 195044), (220, 97522), (440, 48761)]