78981120

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{857}}^1$

素因数の和:890

約数の個数: 144

約数和(自身を含む): 274053780

約数和(自身を除く): 195072660

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 857, 960, 1024, 1152, 1280, 1440, 1536, 1714, 1920, 2048, 2304, 2560, 2571, 2880, 3072, 3428, 3840, 4285, 4608, 5120, 5142, 5760, 6144, 6856, 7680, 7713, 8570, 9216, 10240, 10284, 11520, 12855, 13712, 15360, 15426, 17140, 18432, 20568, 23040, 25710, 27424, 30720, 30852, 34280, 38565, 41136, 46080, 51420, 54848, 61704, 68560, 77130, 82272, 92160, 102840, 109696, 123408, 137120, 154260, 164544, 205680, 219392, 246816, 274240, 308520, 329088, 411360, 438784, 493632, 548480, 617040, 658176, 822720, 877568, 987264, 1096960, 1234080, 1316352, 1645440, 1755136, 1974528, 2193920, 2468160, 2632704, 3290880, 3949056, 4387840, 4936320, 5265408, 6581760, 7898112, 8775680, 9872640, 13163520, 15796224, 19745280, 26327040, 39490560, 78981120]

約数ペア:

[(1, 78981120), (2, 39490560), (3, 26327040), (4, 19745280), (5, 15796224), (6, 13163520), (8, 9872640), (9, 8775680), (10, 7898112), (12, 6581760), (15, 5265408), (16, 4936320), (18, 4387840), (20, 3949056), (24, 3290880), (30, 2632704), (32, 2468160), (36, 2193920), (40, 1974528), (45, 1755136), (48, 1645440), (60, 1316352), (64, 1234080), (72, 1096960), (80, 987264), (90, 877568), (96, 822720), (120, 658176), (128, 617040), (144, 548480), (160, 493632), (180, 438784), (192, 411360), (240, 329088), (256, 308520), (288, 274240), (320, 246816), (360, 219392), (384, 205680), (480, 164544), (512, 154260), (576, 137120), (640, 123408), (720, 109696), (768, 102840), (857, 92160), (960, 82272), (1024, 77130), (1152, 68560), (1280, 61704), (1440, 54848), (1536, 51420), (1714, 46080), (1920, 41136), (2048, 38565), (2304, 34280), (2560, 30852), (2571, 30720), (2880, 27424), (3072, 25710), (3428, 23040), (3840, 20568), (4285, 18432), (4608, 17140), (5120, 15426), (5142, 15360), (5760, 13712), (6144, 12855), (6856, 11520), (7680, 10284), (7713, 10240), (8570, 9216)]