21000947988

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{929}}^1\times {\mathrm{99149}}^1$

素因数の和:100104

約数の個数: 48

約数和(自身を含む): 51637320000

約数和(自身を除く): 30636372012

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 929, 1858, 2787, 3716, 5574, 11148, 17651, 35302, 52953, 70604, 99149, 105906, 198298, 211812, 297447, 396596, 594894, 1189788, 1883831, 3767662, 5651493, 7535324, 11302986, 22605972, 92109421, 184218842, 276328263, 368437684, 552656526, 1105313052, 1750078999, 3500157998, 5250236997, 7000315996, 10500473994, 21000947988]

約数ペア:

[(1, 21000947988), (2, 10500473994), (3, 7000315996), (4, 5250236997), (6, 3500157998), (12, 1750078999), (19, 1105313052), (38, 552656526), (57, 368437684), (76, 276328263), (114, 184218842), (228, 92109421), (929, 22605972), (1858, 11302986), (2787, 7535324), (3716, 5651493), (5574, 3767662), (11148, 1883831), (17651, 1189788), (35302, 594894), (52953, 396596), (70604, 297447), (99149, 211812), (105906, 198298)]