20786120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16763}}^1$

素因数の和:16805

約数の個数: 32

約数和(自身を含む): 48280320

約数和(自身を除く): 27494200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16763, 33526, 67052, 83815, 134104, 167630, 335260, 519653, 670520, 1039306, 2078612, 2598265, 4157224, 5196530, 10393060, 20786120]

約数ペア:

[(1, 20786120), (2, 10393060), (4, 5196530), (5, 4157224), (8, 2598265), (10, 2078612), (20, 1039306), (31, 670520), (40, 519653), (62, 335260), (124, 167630), (155, 134104), (248, 83815), (310, 67052), (620, 33526), (1240, 16763)]