208512975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{263}}^1$

素因数の和:349

約数の個数: 72

約数和(自身を含む): 390082176

約数和(自身を除く): 181569201

約数列:

[1, 3, 5, 11, 15, 25, 31, 33, 55, 75, 93, 155, 165, 263, 275, 341, 465, 775, 789, 825, 961, 1023, 1315, 1705, 2325, 2883, 2893, 3945, 4805, 5115, 6575, 8153, 8525, 8679, 10571, 14415, 14465, 19725, 24025, 24459, 25575, 31713, 40765, 43395, 52855, 72075, 72325, 89683, 122295, 158565, 203825, 216975, 252743, 264275, 269049, 448415, 611475, 758229, 792825, 1263715, 1345245, 2242075, 2780173, 3791145, 6318575, 6726225, 8340519, 13900865, 18955725, 41702595, 69504325, 208512975]

約数ペア:

[(1, 208512975), (3, 69504325), (5, 41702595), (11, 18955725), (15, 13900865), (25, 8340519), (31, 6726225), (33, 6318575), (55, 3791145), (75, 2780173), (93, 2242075), (155, 1345245), (165, 1263715), (263, 792825), (275, 758229), (341, 611475), (465, 448415), (775, 269049), (789, 264275), (825, 252743), (961, 216975), (1023, 203825), (1315, 158565), (1705, 122295), (2325, 89683), (2883, 72325), (2893, 72075), (3945, 52855), (4805, 43395), (5115, 40765), (6575, 31713), (8153, 25575), (8525, 24459), (8679, 24025), (10571, 19725), (14415, 14465)]