21111972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1979}}^1$

素因数の和:2120

約数の個数: 48

約数和(自身を含む): 56770560

約数和(自身を除く): 35658588

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 127, 254, 381, 508, 762, 889, 1524, 1778, 1979, 2667, 3556, 3958, 5334, 5937, 7916, 10668, 11874, 13853, 23748, 27706, 41559, 55412, 83118, 166236, 251333, 502666, 753999, 1005332, 1507998, 1759331, 3015996, 3518662, 5277993, 7037324, 10555986, 21111972]

約数ペア:

[(1, 21111972), (2, 10555986), (3, 7037324), (4, 5277993), (6, 3518662), (7, 3015996), (12, 1759331), (14, 1507998), (21, 1005332), (28, 753999), (42, 502666), (84, 251333), (127, 166236), (254, 83118), (381, 55412), (508, 41559), (762, 27706), (889, 23748), (1524, 13853), (1778, 11874), (1979, 10668), (2667, 7916), (3556, 5937), (3958, 5334)]