20803835

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 28994112

約数和(自身を除く): 8190277

約数列:

[1, 5, 13, 17, 65, 67, 85, 221, 281, 335, 871, 1105, 1139, 1405, 3653, 4355, 4777, 5695, 14807, 18265, 18827, 23885, 62101, 74035, 94135, 244751, 310505, 320059, 1223755, 1600295, 4160767, 20803835]

約数ペア:

[(1, 20803835), (5, 4160767), (13, 1600295), (17, 1223755), (65, 320059), (67, 310505), (85, 244751), (221, 94135), (281, 74035), (335, 62101), (871, 23885), (1105, 18827), (1139, 18265), (1405, 14807), (3653, 5695), (4355, 4777)]