21471560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48799}}^1$

素因数の和:48821

約数の個数: 32

約数和(自身を含む): 52704000

約数和(自身を除く): 31232440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48799, 97598, 195196, 243995, 390392, 487990, 536789, 975980, 1073578, 1951960, 2147156, 2683945, 4294312, 5367890, 10735780, 21471560]

約数ペア:

[(1, 21471560), (2, 10735780), (4, 5367890), (5, 4294312), (8, 2683945), (10, 2147156), (11, 1951960), (20, 1073578), (22, 975980), (40, 536789), (44, 487990), (55, 390392), (88, 243995), (110, 195196), (220, 97598), (440, 48799)]