20199721240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{56179}}^1$

素因数の和:56380

約数の個数: 64

約数和(自身を含む): 46415916000

約数和(自身を除く): 26216194760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 101, 178, 202, 356, 404, 445, 505, 712, 808, 890, 1010, 1780, 2020, 3560, 4040, 8989, 17978, 35956, 44945, 56179, 71912, 89890, 112358, 179780, 224716, 280895, 359560, 449432, 561790, 1123580, 2247160, 4999931, 5674079, 9999862, 11348158, 19999724, 22696316, 24999655, 28370395, 39999448, 45392632, 49999310, 56740790, 99998620, 113481580, 199997240, 226963160, 504993031, 1009986062, 2019972124, 2524965155, 4039944248, 5049930310, 10099860620, 20199721240]

約数ペア:

[(1, 20199721240), (2, 10099860620), (4, 5049930310), (5, 4039944248), (8, 2524965155), (10, 2019972124), (20, 1009986062), (40, 504993031), (89, 226963160), (101, 199997240), (178, 113481580), (202, 99998620), (356, 56740790), (404, 49999310), (445, 45392632), (505, 39999448), (712, 28370395), (808, 24999655), (890, 22696316), (1010, 19999724), (1780, 11348158), (2020, 9999862), (3560, 5674079), (4040, 4999931), (8989, 2247160), (17978, 1123580), (35956, 561790), (44945, 449432), (56179, 359560), (71912, 280895), (89890, 224716), (112358, 179780)]