21078480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1237}}^1$

素因数の和:1324

約数の個数: 80

約数和(自身を含む): 66317184

約数和(自身を除く): 45238704

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1237, 1420, 1704, 2130, 2474, 2840, 3408, 3711, 4260, 4948, 5680, 6185, 7422, 8520, 9896, 12370, 14844, 17040, 18555, 19792, 24740, 29688, 37110, 49480, 59376, 74220, 87827, 98960, 148440, 175654, 263481, 296880, 351308, 439135, 526962, 702616, 878270, 1053924, 1317405, 1405232, 1756540, 2107848, 2634810, 3513080, 4215696, 5269620, 7026160, 10539240, 21078480]

約数ペア:

[(1, 21078480), (2, 10539240), (3, 7026160), (4, 5269620), (5, 4215696), (6, 3513080), (8, 2634810), (10, 2107848), (12, 1756540), (15, 1405232), (16, 1317405), (20, 1053924), (24, 878270), (30, 702616), (40, 526962), (48, 439135), (60, 351308), (71, 296880), (80, 263481), (120, 175654), (142, 148440), (213, 98960), (240, 87827), (284, 74220), (355, 59376), (426, 49480), (568, 37110), (710, 29688), (852, 24740), (1065, 19792), (1136, 18555), (1237, 17040), (1420, 14844), (1704, 12370), (2130, 9896), (2474, 8520), (2840, 7422), (3408, 6185), (3711, 5680), (4260, 4948)]