20845175775

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{641}}^1$

素因数の和:953

約数の個数: 96

約数和(自身を含む): 36316532736

約数和(自身を除く): 15471356961

約数列:

[1, 3, 5, 15, 25, 31, 71, 75, 93, 155, 197, 213, 355, 465, 591, 641, 775, 985, 1065, 1775, 1923, 2201, 2325, 2955, 3205, 4925, 5325, 6107, 6603, 9615, 11005, 13987, 14775, 16025, 18321, 19871, 30535, 33015, 41961, 45511, 48075, 55025, 59613, 69935, 91605, 99355, 126277, 136533, 152675, 165075, 209805, 227555, 298065, 349675, 378831, 433597, 458025, 496775, 631385, 682665, 1049025, 1137775, 1300791, 1410841, 1490325, 1894155, 2167985, 3156925, 3413325, 3914587, 4232523, 6503955, 7054205, 8965667, 9470775, 10839925, 11743761, 19572935, 21162615, 26897001, 32519775, 35271025, 44828335, 58718805, 97864675, 105813075, 134485005, 224141675, 277935677, 293594025, 672425025, 833807031, 1389678385, 4169035155, 6948391925, 20845175775]

約数ペア:

[(1, 20845175775), (3, 6948391925), (5, 4169035155), (15, 1389678385), (25, 833807031), (31, 672425025), (71, 293594025), (75, 277935677), (93, 224141675), (155, 134485005), (197, 105813075), (213, 97864675), (355, 58718805), (465, 44828335), (591, 35271025), (641, 32519775), (775, 26897001), (985, 21162615), (1065, 19572935), (1775, 11743761), (1923, 10839925), (2201, 9470775), (2325, 8965667), (2955, 7054205), (3205, 6503955), (4925, 4232523), (5325, 3914587), (6107, 3413325), (6603, 3156925), (9615, 2167985), (11005, 1894155), (13987, 1490325), (14775, 1410841), (16025, 1300791), (18321, 1137775), (19871, 1049025), (30535, 682665), (33015, 631385), (41961, 496775), (45511, 458025), (48075, 433597), (55025, 378831), (59613, 349675), (69935, 298065), (91605, 227555), (99355, 209805), (126277, 165075), (136533, 152675)]