21283240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48371}}^1$

素因数の和:48393

約数の個数: 32

約数和(自身を含む): 52241760

約数和(自身を除く): 30958520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48371, 96742, 193484, 241855, 386968, 483710, 532081, 967420, 1064162, 1934840, 2128324, 2660405, 4256648, 5320810, 10641620, 21283240]

約数ペア:

[(1, 21283240), (2, 10641620), (4, 5320810), (5, 4256648), (8, 2660405), (10, 2128324), (11, 1934840), (20, 1064162), (22, 967420), (40, 532081), (44, 483710), (55, 386968), (88, 241855), (110, 193484), (220, 96742), (440, 48371)]