55121915

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 72078336

約数和(自身を除く): 16956421

約数列:

[1, 5, 23, 43, 71, 115, 157, 215, 355, 785, 989, 1633, 3053, 3611, 4945, 6751, 8165, 11147, 15265, 18055, 33755, 55735, 70219, 155273, 256381, 351095, 479321, 776365, 1281905, 2396605, 11024383, 55121915]

約数ペア:

[(1, 55121915), (5, 11024383), (23, 2396605), (43, 1281905), (71, 776365), (115, 479321), (157, 351095), (215, 256381), (355, 155273), (785, 70219), (989, 55735), (1633, 33755), (3053, 18055), (3611, 15265), (4945, 11147), (6751, 8165)]