20763440

素因数分解:

$2^4\times 5^1\times {\mathrm{461}}^1\times {\mathrm{563}}^1$

素因数の和:1037

約数の個数: 40

約数和(自身を含む): 48465648

約数和(自身を除く): 27702208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 461, 563, 922, 1126, 1844, 2252, 2305, 2815, 3688, 4504, 4610, 5630, 7376, 9008, 9220, 11260, 18440, 22520, 36880, 45040, 259543, 519086, 1038172, 1297715, 2076344, 2595430, 4152688, 5190860, 10381720, 20763440]

約数ペア:

[(1, 20763440), (2, 10381720), (4, 5190860), (5, 4152688), (8, 2595430), (10, 2076344), (16, 1297715), (20, 1038172), (40, 519086), (80, 259543), (461, 45040), (563, 36880), (922, 22520), (1126, 18440), (1844, 11260), (2252, 9220), (2305, 9008), (2815, 7376), (3688, 5630), (4504, 4610)]