20229880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2044

約数の個数: 64

約数和(自身を含む): 51840000

約数和(自身を除く): 31610120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 1999, 2024, 2530, 3998, 5060, 7996, 9995, 10120, 15992, 19990, 21989, 39980, 43978, 45977, 79960, 87956, 91954, 109945, 175912, 183908, 219890, 229885, 367816, 439780, 459770, 505747, 879560, 919540, 1011494, 1839080, 2022988, 2528735, 4045976, 5057470, 10114940, 20229880]

約数ペア:

[(1, 20229880), (2, 10114940), (4, 5057470), (5, 4045976), (8, 2528735), (10, 2022988), (11, 1839080), (20, 1011494), (22, 919540), (23, 879560), (40, 505747), (44, 459770), (46, 439780), (55, 367816), (88, 229885), (92, 219890), (110, 183908), (115, 175912), (184, 109945), (220, 91954), (230, 87956), (253, 79960), (440, 45977), (460, 43978), (506, 39980), (920, 21989), (1012, 19990), (1265, 15992), (1999, 10120), (2024, 9995), (2530, 7996), (3998, 5060)]