56531720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2118

約数の個数: 64

約数和(自身を含む): 146880000

約数和(自身を除く): 90348280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 808, 1010, 1414, 1999, 2020, 2828, 3535, 3998, 4040, 5656, 7070, 7996, 9995, 13993, 14140, 15992, 19990, 27986, 28280, 39980, 55972, 69965, 79960, 111944, 139930, 201899, 279860, 403798, 559720, 807596, 1009495, 1413293, 1615192, 2018990, 2826586, 4037980, 5653172, 7066465, 8075960, 11306344, 14132930, 28265860, 56531720]

約数ペア:

[(1, 56531720), (2, 28265860), (4, 14132930), (5, 11306344), (7, 8075960), (8, 7066465), (10, 5653172), (14, 4037980), (20, 2826586), (28, 2018990), (35, 1615192), (40, 1413293), (56, 1009495), (70, 807596), (101, 559720), (140, 403798), (202, 279860), (280, 201899), (404, 139930), (505, 111944), (707, 79960), (808, 69965), (1010, 55972), (1414, 39980), (1999, 28280), (2020, 27986), (2828, 19990), (3535, 15992), (3998, 14140), (4040, 13993), (5656, 9995), (7070, 7996)]