19797840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:937

約数の個数: 120

約数和(自身を含む): 68709888

約数和(自身を除く): 48912048

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 887, 930, 1116, 1240, 1395, 1488, 1774, 1860, 2232, 2480, 2661, 2790, 3548, 3720, 4435, 4464, 5322, 5580, 7096, 7440, 7983, 8870, 10644, 11160, 13305, 14192, 15966, 17740, 21288, 22320, 26610, 27497, 31932, 35480, 39915, 42576, 53220, 54994, 63864, 70960, 79830, 82491, 106440, 109988, 127728, 137485, 159660, 164982, 212880, 219976, 247473, 274970, 319320, 329964, 412455, 439952, 494946, 549940, 638640, 659928, 824910, 989892, 1099880, 1237365, 1319856, 1649820, 1979784, 2199760, 2474730, 3299640, 3959568, 4949460, 6599280, 9898920, 19797840]

約数ペア:

[(1, 19797840), (2, 9898920), (3, 6599280), (4, 4949460), (5, 3959568), (6, 3299640), (8, 2474730), (9, 2199760), (10, 1979784), (12, 1649820), (15, 1319856), (16, 1237365), (18, 1099880), (20, 989892), (24, 824910), (30, 659928), (31, 638640), (36, 549940), (40, 494946), (45, 439952), (48, 412455), (60, 329964), (62, 319320), (72, 274970), (80, 247473), (90, 219976), (93, 212880), (120, 164982), (124, 159660), (144, 137485), (155, 127728), (180, 109988), (186, 106440), (240, 82491), (248, 79830), (279, 70960), (310, 63864), (360, 54994), (372, 53220), (465, 42576), (496, 39915), (558, 35480), (620, 31932), (720, 27497), (744, 26610), (887, 22320), (930, 21288), (1116, 17740), (1240, 15966), (1395, 14192), (1488, 13305), (1774, 11160), (1860, 10644), (2232, 8870), (2480, 7983), (2661, 7440), (2790, 7096), (3548, 5580), (3720, 5322), (4435, 4464)]