20172730880

素因数分解:

$2^9\times 5^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1\times {\mathrm{431}}^1$

素因数の和:890

約数の個数: 160

約数和(自身を含む): 49638251520

約数和(自身を除く): 29465520640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 256, 320, 376, 389, 431, 470, 512, 640, 752, 778, 862, 940, 1280, 1504, 1556, 1724, 1880, 1945, 2155, 2560, 3008, 3112, 3448, 3760, 3890, 4310, 6016, 6224, 6896, 7520, 7780, 8620, 12032, 12448, 13792, 15040, 15560, 17240, 18283, 20257, 24064, 24896, 27584, 30080, 31120, 34480, 36566, 40514, 49792, 55168, 60160, 62240, 68960, 73132, 81028, 91415, 99584, 101285, 110336, 120320, 124480, 137920, 146264, 162056, 167659, 182830, 199168, 202570, 220672, 248960, 275840, 292528, 324112, 335318, 365660, 405140, 497920, 551680, 585056, 648224, 670636, 731320, 810280, 838295, 995840, 1103360, 1170112, 1296448, 1341272, 1462640, 1620560, 1676590, 2340224, 2592896, 2682544, 2925280, 3241120, 3353180, 4680448, 5185792, 5365088, 5850560, 6482240, 6706360, 7879973, 9360896, 10371584, 10730176, 11701120, 12964480, 13412720, 15759946, 21460352, 23402240, 25928960, 26825440, 31519892, 39399865, 42920704, 46804480, 51857920, 53650880, 63039784, 78799730, 85841408, 107301760, 126079568, 157599460, 214603520, 252159136, 315198920, 429207040, 504318272, 630397840, 1008636544, 1260795680, 2017273088, 2521591360, 4034546176, 5043182720, 10086365440, 20172730880]

約数ペア:

[(1, 20172730880), (2, 10086365440), (4, 5043182720), (5, 4034546176), (8, 2521591360), (10, 2017273088), (16, 1260795680), (20, 1008636544), (32, 630397840), (40, 504318272), (47, 429207040), (64, 315198920), (80, 252159136), (94, 214603520), (128, 157599460), (160, 126079568), (188, 107301760), (235, 85841408), (256, 78799730), (320, 63039784), (376, 53650880), (389, 51857920), (431, 46804480), (470, 42920704), (512, 39399865), (640, 31519892), (752, 26825440), (778, 25928960), (862, 23402240), (940, 21460352), (1280, 15759946), (1504, 13412720), (1556, 12964480), (1724, 11701120), (1880, 10730176), (1945, 10371584), (2155, 9360896), (2560, 7879973), (3008, 6706360), (3112, 6482240), (3448, 5850560), (3760, 5365088), (3890, 5185792), (4310, 4680448), (6016, 3353180), (6224, 3241120), (6896, 2925280), (7520, 2682544), (7780, 2592896), (8620, 2340224), (12032, 1676590), (12448, 1620560), (13792, 1462640), (15040, 1341272), (15560, 1296448), (17240, 1170112), (18283, 1103360), (20257, 995840), (24064, 838295), (24896, 810280), (27584, 731320), (30080, 670636), (31120, 648224), (34480, 585056), (36566, 551680), (40514, 497920), (49792, 405140), (55168, 365660), (60160, 335318), (62240, 324112), (68960, 292528), (73132, 275840), (81028, 248960), (91415, 220672), (99584, 202570), (101285, 199168), (110336, 182830), (120320, 167659), (124480, 162056), (137920, 146264)]