81956880

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1997}}^1$

素因数の和:2038

約数の個数: 160

約数和(自身を含む): 297302400

約数和(自身を除く): 215345520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 90, 95, 108, 114, 120, 135, 144, 152, 171, 180, 190, 216, 228, 240, 270, 285, 304, 342, 360, 380, 432, 456, 513, 540, 570, 684, 720, 760, 855, 912, 1026, 1080, 1140, 1368, 1520, 1710, 1997, 2052, 2160, 2280, 2565, 2736, 3420, 3994, 4104, 4560, 5130, 5991, 6840, 7988, 8208, 9985, 10260, 11982, 13680, 15976, 17973, 19970, 20520, 23964, 29955, 31952, 35946, 37943, 39940, 41040, 47928, 53919, 59910, 71892, 75886, 79880, 89865, 95856, 107838, 113829, 119820, 143784, 151772, 159760, 179730, 189715, 215676, 227658, 239640, 269595, 287568, 303544, 341487, 359460, 379430, 431352, 455316, 479280, 539190, 569145, 607088, 682974, 718920, 758860, 862704, 910632, 1024461, 1078380, 1138290, 1365948, 1437840, 1517720, 1707435, 1821264, 2048922, 2156760, 2276580, 2731896, 3035440, 3414870, 4097844, 4313520, 4553160, 5122305, 5463792, 6829740, 8195688, 9106320, 10244610, 13659480, 16391376, 20489220, 27318960, 40978440, 81956880]

約数ペア:

[(1, 81956880), (2, 40978440), (3, 27318960), (4, 20489220), (5, 16391376), (6, 13659480), (8, 10244610), (9, 9106320), (10, 8195688), (12, 6829740), (15, 5463792), (16, 5122305), (18, 4553160), (19, 4313520), (20, 4097844), (24, 3414870), (27, 3035440), (30, 2731896), (36, 2276580), (38, 2156760), (40, 2048922), (45, 1821264), (48, 1707435), (54, 1517720), (57, 1437840), (60, 1365948), (72, 1138290), (76, 1078380), (80, 1024461), (90, 910632), (95, 862704), (108, 758860), (114, 718920), (120, 682974), (135, 607088), (144, 569145), (152, 539190), (171, 479280), (180, 455316), (190, 431352), (216, 379430), (228, 359460), (240, 341487), (270, 303544), (285, 287568), (304, 269595), (342, 239640), (360, 227658), (380, 215676), (432, 189715), (456, 179730), (513, 159760), (540, 151772), (570, 143784), (684, 119820), (720, 113829), (760, 107838), (855, 95856), (912, 89865), (1026, 79880), (1080, 75886), (1140, 71892), (1368, 59910), (1520, 53919), (1710, 47928), (1997, 41040), (2052, 39940), (2160, 37943), (2280, 35946), (2565, 31952), (2736, 29955), (3420, 23964), (3994, 20520), (4104, 19970), (4560, 17973), (5130, 15976), (5991, 13680), (6840, 11982), (7988, 10260), (8208, 9985)]