81209425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{599}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 120528000

約数和(自身を除く): 39318575

約数列:

[1, 5, 11, 17, 25, 29, 55, 85, 145, 187, 275, 319, 425, 493, 599, 725, 935, 1595, 2465, 2995, 4675, 5423, 6589, 7975, 10183, 12325, 14975, 17371, 27115, 32945, 50915, 86855, 112013, 135575, 164725, 191081, 254575, 295307, 434275, 560065, 955405, 1476535, 2800325, 3248377, 4777025, 7382675, 16241885, 81209425]

約数ペア:

[(1, 81209425), (5, 16241885), (11, 7382675), (17, 4777025), (25, 3248377), (29, 2800325), (55, 1476535), (85, 955405), (145, 560065), (187, 434275), (275, 295307), (319, 254575), (425, 191081), (493, 164725), (599, 135575), (725, 112013), (935, 86855), (1595, 50915), (2465, 32945), (2995, 27115), (4675, 17371), (5423, 14975), (6589, 12325), (7975, 10183)]