18428405

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 24427008

約数和(自身を除く): 5998603

約数列:

[1, 5, 23, 37, 61, 71, 115, 185, 305, 355, 851, 1403, 1633, 2257, 2627, 4255, 4331, 7015, 8165, 11285, 13135, 21655, 51911, 60421, 99613, 160247, 259555, 302105, 498065, 801235, 3685681, 18428405]

約数ペア:

[(1, 18428405), (5, 3685681), (23, 801235), (37, 498065), (61, 302105), (71, 259555), (115, 160247), (185, 99613), (305, 60421), (355, 51911), (851, 21655), (1403, 13135), (1633, 11285), (2257, 8165), (2627, 7015), (4255, 4331)]