20659216

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{503}}^1$

素因数の和:679

約数の個数: 40

約数和(自身を含む): 42747264

約数和(自身を除く): 22088048

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 151, 272, 302, 503, 604, 1006, 1208, 2012, 2416, 2567, 4024, 5134, 8048, 8551, 10268, 17102, 20536, 34204, 41072, 68408, 75953, 136816, 151906, 303812, 607624, 1215248, 1291201, 2582402, 5164804, 10329608, 20659216]

約数ペア:

[(1, 20659216), (2, 10329608), (4, 5164804), (8, 2582402), (16, 1291201), (17, 1215248), (34, 607624), (68, 303812), (136, 151906), (151, 136816), (272, 75953), (302, 68408), (503, 41072), (604, 34204), (1006, 20536), (1208, 17102), (2012, 10268), (2416, 8551), (2567, 8048), (4024, 5134)]