21911045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 8570875

約数列:

[1, 5, 13, 17, 65, 79, 85, 221, 251, 395, 1027, 1105, 1255, 1343, 3263, 4267, 5135, 6715, 16315, 17459, 19829, 21335, 55471, 87295, 99145, 257777, 277355, 337093, 1288885, 1685465, 4382209, 21911045]

約数ペア:

[(1, 21911045), (5, 4382209), (13, 1685465), (17, 1288885), (65, 337093), (79, 277355), (85, 257777), (221, 99145), (251, 87295), (395, 55471), (1027, 21335), (1105, 19829), (1255, 17459), (1343, 16315), (3263, 6715), (4267, 5135)]