20671020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4993}}^1$

素因数の和:5031

約数の個数: 72

約数和(自身を含む): 65441376

約数和(自身を除く): 44770356

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4993, 9986, 14979, 19972, 24965, 29958, 44937, 49930, 59916, 74895, 89874, 99860, 114839, 149790, 179748, 224685, 229678, 299580, 344517, 449370, 459356, 574195, 689034, 898740, 1033551, 1148390, 1378068, 1722585, 2067102, 2296780, 3445170, 4134204, 5167755, 6890340, 10335510, 20671020]

約数ペア:

[(1, 20671020), (2, 10335510), (3, 6890340), (4, 5167755), (5, 4134204), (6, 3445170), (9, 2296780), (10, 2067102), (12, 1722585), (15, 1378068), (18, 1148390), (20, 1033551), (23, 898740), (30, 689034), (36, 574195), (45, 459356), (46, 449370), (60, 344517), (69, 299580), (90, 229678), (92, 224685), (115, 179748), (138, 149790), (180, 114839), (207, 99860), (230, 89874), (276, 74895), (345, 59916), (414, 49930), (460, 44937), (690, 29958), (828, 24965), (1035, 19972), (1380, 14979), (2070, 9986), (4140, 4993)]