20720986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1367}}^1$

素因数の和:1446

約数の個数: 32

約数和(自身を含む): 37231488

約数和(自身を除く): 16510502

約数列:

[1, 2, 11, 13, 22, 26, 53, 106, 143, 286, 583, 689, 1166, 1367, 1378, 2734, 7579, 15037, 15158, 17771, 30074, 35542, 72451, 144902, 195481, 390962, 796961, 941863, 1593922, 1883726, 10360493, 20720986]

約数ペア:

[(1, 20720986), (2, 10360493), (11, 1883726), (13, 1593922), (22, 941863), (26, 796961), (53, 390962), (106, 195481), (143, 144902), (286, 72451), (583, 35542), (689, 30074), (1166, 17771), (1367, 15158), (1378, 15037), (2734, 7579)]