20928960

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1$

素因数の和:92

約数の個数: 252

約数和(自身を含む): 79763112

約数和(自身を除く): 58834152

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 43, 45, 48, 52, 60, 64, 65, 72, 78, 80, 86, 90, 96, 104, 117, 120, 129, 130, 144, 156, 160, 169, 172, 180, 192, 195, 208, 215, 234, 240, 258, 260, 288, 312, 320, 338, 344, 360, 387, 390, 416, 430, 468, 480, 507, 516, 520, 559, 576, 585, 624, 645, 676, 688, 720, 774, 780, 832, 845, 860, 936, 960, 1014, 1032, 1040, 1118, 1170, 1248, 1290, 1352, 1376, 1440, 1521, 1548, 1560, 1677, 1690, 1720, 1872, 1935, 2028, 2064, 2080, 2236, 2340, 2496, 2535, 2580, 2704, 2752, 2795, 2880, 3042, 3096, 3120, 3354, 3380, 3440, 3744, 3870, 4056, 4128, 4160, 4472, 4680, 5031, 5070, 5160, 5408, 5590, 6084, 6192, 6240, 6708, 6760, 6880, 7267, 7488, 7605, 7740, 8112, 8256, 8385, 8944, 9360, 10062, 10140, 10320, 10816, 11180, 12168, 12384, 12480, 13416, 13520, 13760, 14534, 15210, 15480, 16224, 16770, 17888, 18720, 20124, 20280, 20640, 21801, 22360, 24336, 24768, 25155, 26832, 27040, 29068, 30420, 30960, 32448, 33540, 35776, 36335, 37440, 40248, 40560, 41280, 43602, 44720, 48672, 50310, 53664, 54080, 58136, 60840, 61920, 65403, 67080, 72670, 80496, 81120, 87204, 89440, 97344, 100620, 107328, 109005, 116272, 121680, 123840, 130806, 134160, 145340, 160992, 162240, 174408, 178880, 201240, 218010, 232544, 243360, 261612, 268320, 290680, 321984, 327015, 348816, 402480, 436020, 465088, 486720, 523224, 536640, 581360, 654030, 697632, 804960, 872040, 1046448, 1162720, 1308060, 1395264, 1609920, 1744080, 2092896, 2325440, 2616120, 3488160, 4185792, 5232240, 6976320, 10464480, 20928960]

約数ペア:

[(1, 20928960), (2, 10464480), (3, 6976320), (4, 5232240), (5, 4185792), (6, 3488160), (8, 2616120), (9, 2325440), (10, 2092896), (12, 1744080), (13, 1609920), (15, 1395264), (16, 1308060), (18, 1162720), (20, 1046448), (24, 872040), (26, 804960), (30, 697632), (32, 654030), (36, 581360), (39, 536640), (40, 523224), (43, 486720), (45, 465088), (48, 436020), (52, 402480), (60, 348816), (64, 327015), (65, 321984), (72, 290680), (78, 268320), (80, 261612), (86, 243360), (90, 232544), (96, 218010), (104, 201240), (117, 178880), (120, 174408), (129, 162240), (130, 160992), (144, 145340), (156, 134160), (160, 130806), (169, 123840), (172, 121680), (180, 116272), (192, 109005), (195, 107328), (208, 100620), (215, 97344), (234, 89440), (240, 87204), (258, 81120), (260, 80496), (288, 72670), (312, 67080), (320, 65403), (338, 61920), (344, 60840), (360, 58136), (387, 54080), (390, 53664), (416, 50310), (430, 48672), (468, 44720), (480, 43602), (507, 41280), (516, 40560), (520, 40248), (559, 37440), (576, 36335), (585, 35776), (624, 33540), (645, 32448), (676, 30960), (688, 30420), (720, 29068), (774, 27040), (780, 26832), (832, 25155), (845, 24768), (860, 24336), (936, 22360), (960, 21801), (1014, 20640), (1032, 20280), (1040, 20124), (1118, 18720), (1170, 17888), (1248, 16770), (1290, 16224), (1352, 15480), (1376, 15210), (1440, 14534), (1521, 13760), (1548, 13520), (1560, 13416), (1677, 12480), (1690, 12384), (1720, 12168), (1872, 11180), (1935, 10816), (2028, 10320), (2064, 10140), (2080, 10062), (2236, 9360), (2340, 8944), (2496, 8385), (2535, 8256), (2580, 8112), (2704, 7740), (2752, 7605), (2795, 7488), (2880, 7267), (3042, 6880), (3096, 6760), (3120, 6708), (3354, 6240), (3380, 6192), (3440, 6084), (3744, 5590), (3870, 5408), (4056, 5160), (4128, 5070), (4160, 5031), (4472, 4680)]