20027520

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:108

約数の個数: 256

約数和(自身を含む): 75888000

約数和(自身を除く): 55860480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 61, 64, 72, 76, 80, 90, 95, 96, 108, 114, 120, 122, 128, 135, 144, 152, 160, 171, 180, 183, 190, 192, 216, 228, 240, 244, 270, 285, 288, 304, 305, 320, 342, 360, 366, 380, 384, 432, 456, 480, 488, 513, 540, 549, 570, 576, 608, 610, 640, 684, 720, 732, 760, 855, 864, 912, 915, 960, 976, 1026, 1080, 1098, 1140, 1152, 1159, 1216, 1220, 1368, 1440, 1464, 1520, 1647, 1710, 1728, 1824, 1830, 1920, 1952, 2052, 2160, 2196, 2280, 2318, 2432, 2440, 2565, 2736, 2745, 2880, 2928, 3040, 3294, 3420, 3456, 3477, 3648, 3660, 3904, 4104, 4320, 4392, 4560, 4636, 4880, 5130, 5472, 5490, 5760, 5795, 5856, 6080, 6588, 6840, 6954, 7296, 7320, 7808, 8208, 8235, 8640, 8784, 9120, 9272, 9760, 10260, 10431, 10944, 10980, 11590, 11712, 12160, 13176, 13680, 13908, 14640, 16416, 16470, 17280, 17385, 17568, 18240, 18544, 19520, 20520, 20862, 21888, 21960, 23180, 23424, 26352, 27360, 27816, 29280, 31293, 32832, 32940, 34770, 35136, 36480, 37088, 39040, 41040, 41724, 43920, 46360, 52155, 52704, 54720, 55632, 58560, 62586, 65664, 65880, 69540, 70272, 74176, 82080, 83448, 87840, 92720, 104310, 105408, 109440, 111264, 117120, 125172, 131760, 139080, 148352, 156465, 164160, 166896, 175680, 185440, 208620, 210816, 222528, 250344, 263520, 278160, 312930, 328320, 333792, 351360, 370880, 417240, 445056, 500688, 527040, 556320, 625860, 667584, 741760, 834480, 1001376, 1054080, 1112640, 1251720, 1335168, 1668960, 2002752, 2225280, 2503440, 3337920, 4005504, 5006880, 6675840, 10013760, 20027520]

約数ペア:

[(1, 20027520), (2, 10013760), (3, 6675840), (4, 5006880), (5, 4005504), (6, 3337920), (8, 2503440), (9, 2225280), (10, 2002752), (12, 1668960), (15, 1335168), (16, 1251720), (18, 1112640), (19, 1054080), (20, 1001376), (24, 834480), (27, 741760), (30, 667584), (32, 625860), (36, 556320), (38, 527040), (40, 500688), (45, 445056), (48, 417240), (54, 370880), (57, 351360), (60, 333792), (61, 328320), (64, 312930), (72, 278160), (76, 263520), (80, 250344), (90, 222528), (95, 210816), (96, 208620), (108, 185440), (114, 175680), (120, 166896), (122, 164160), (128, 156465), (135, 148352), (144, 139080), (152, 131760), (160, 125172), (171, 117120), (180, 111264), (183, 109440), (190, 105408), (192, 104310), (216, 92720), (228, 87840), (240, 83448), (244, 82080), (270, 74176), (285, 70272), (288, 69540), (304, 65880), (305, 65664), (320, 62586), (342, 58560), (360, 55632), (366, 54720), (380, 52704), (384, 52155), (432, 46360), (456, 43920), (480, 41724), (488, 41040), (513, 39040), (540, 37088), (549, 36480), (570, 35136), (576, 34770), (608, 32940), (610, 32832), (640, 31293), (684, 29280), (720, 27816), (732, 27360), (760, 26352), (855, 23424), (864, 23180), (912, 21960), (915, 21888), (960, 20862), (976, 20520), (1026, 19520), (1080, 18544), (1098, 18240), (1140, 17568), (1152, 17385), (1159, 17280), (1216, 16470), (1220, 16416), (1368, 14640), (1440, 13908), (1464, 13680), (1520, 13176), (1647, 12160), (1710, 11712), (1728, 11590), (1824, 10980), (1830, 10944), (1920, 10431), (1952, 10260), (2052, 9760), (2160, 9272), (2196, 9120), (2280, 8784), (2318, 8640), (2432, 8235), (2440, 8208), (2565, 7808), (2736, 7320), (2745, 7296), (2880, 6954), (2928, 6840), (3040, 6588), (3294, 6080), (3420, 5856), (3456, 5795), (3477, 5760), (3648, 5490), (3660, 5472), (3904, 5130), (4104, 4880), (4320, 4636), (4392, 4560)]