21720804

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{258581}}^1$

素因数の和:258595

約数の個数: 24

約数和(自身を含む): 57922368

約数和(自身を除く): 36201564

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 258581, 517162, 775743, 1034324, 1551486, 1810067, 3102972, 3620134, 5430201, 7240268, 10860402, 21720804]

約数ペア:

[(1, 21720804), (2, 10860402), (3, 7240268), (4, 5430201), (6, 3620134), (7, 3102972), (12, 1810067), (14, 1551486), (21, 1034324), (28, 775743), (42, 517162), (84, 258581)]