20470190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2971}}^1$

素因数の和:3044

約数の個数: 32

約数和(自身を含む): 40442976

約数和(自身を除く): 19972786

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 2971, 3445, 5942, 6890, 14855, 29710, 38623, 77246, 157463, 193115, 314926, 386230, 787315, 1574630, 2047019, 4094038, 10235095, 20470190]

約数ペア:

[(1, 20470190), (2, 10235095), (5, 4094038), (10, 2047019), (13, 1574630), (26, 787315), (53, 386230), (65, 314926), (106, 193115), (130, 157463), (265, 77246), (530, 38623), (689, 29710), (1378, 14855), (2971, 6890), (3445, 5942)]