21236528095

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{66749}}^1$

素因数の和:66987

約数の個数: 32

約数和(自身を含む): 28547640000

約数和(自身を除く): 7311111905

約数列:

[1, 5, 17, 19, 85, 95, 197, 323, 985, 1615, 3349, 3743, 16745, 18715, 63631, 66749, 318155, 333745, 1134733, 1268231, 5673665, 6341155, 13149553, 21559927, 65747765, 107799635, 223542401, 249841507, 1117712005, 1249207535, 4247305619, 21236528095]

約数ペア:

[(1, 21236528095), (5, 4247305619), (17, 1249207535), (19, 1117712005), (85, 249841507), (95, 223542401), (197, 107799635), (323, 65747765), (985, 21559927), (1615, 13149553), (3349, 6341155), (3743, 5673665), (16745, 1268231), (18715, 1134733), (63631, 333745), (66749, 318155)]