123315520

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^2\times {\mathrm{401}}^1$

素因数の和:480

約数の個数: 84

約数和(自身を含む): 304179732

約数和(自身を除く): 180864212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 401, 496, 620, 802, 961, 992, 1240, 1604, 1922, 1984, 2005, 2480, 3208, 3844, 4010, 4805, 4960, 6416, 7688, 8020, 9610, 9920, 12431, 12832, 15376, 16040, 19220, 24862, 25664, 30752, 32080, 38440, 49724, 61504, 62155, 64160, 76880, 99448, 124310, 128320, 153760, 198896, 248620, 307520, 385361, 397792, 497240, 770722, 795584, 994480, 1541444, 1926805, 1988960, 3082888, 3853610, 3977920, 6165776, 7707220, 12331552, 15414440, 24663104, 30828880, 61657760, 123315520]

約数ペア:

[(1, 123315520), (2, 61657760), (4, 30828880), (5, 24663104), (8, 15414440), (10, 12331552), (16, 7707220), (20, 6165776), (31, 3977920), (32, 3853610), (40, 3082888), (62, 1988960), (64, 1926805), (80, 1541444), (124, 994480), (155, 795584), (160, 770722), (248, 497240), (310, 397792), (320, 385361), (401, 307520), (496, 248620), (620, 198896), (802, 153760), (961, 128320), (992, 124310), (1240, 99448), (1604, 76880), (1922, 64160), (1984, 62155), (2005, 61504), (2480, 49724), (3208, 38440), (3844, 32080), (4010, 30752), (4805, 25664), (4960, 24862), (6416, 19220), (7688, 16040), (8020, 15376), (9610, 12832), (9920, 12431)]