19937820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1283}}^1$

素因数の和:1339

約数の個数: 96

約数和(自身を含む): 65576448

約数和(自身を除く): 45638628

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 37, 42, 60, 70, 74, 84, 105, 111, 140, 148, 185, 210, 222, 259, 370, 420, 444, 518, 555, 740, 777, 1036, 1110, 1283, 1295, 1554, 2220, 2566, 2590, 3108, 3849, 3885, 5132, 5180, 6415, 7698, 7770, 8981, 12830, 15396, 15540, 17962, 19245, 25660, 26943, 35924, 38490, 44905, 47471, 53886, 76980, 89810, 94942, 107772, 134715, 142413, 179620, 189884, 237355, 269430, 284826, 332297, 474710, 538860, 569652, 664594, 712065, 949420, 996891, 1329188, 1424130, 1661485, 1993782, 2848260, 3322970, 3987564, 4984455, 6645940, 9968910, 19937820]

約数ペア:

[(1, 19937820), (2, 9968910), (3, 6645940), (4, 4984455), (5, 3987564), (6, 3322970), (7, 2848260), (10, 1993782), (12, 1661485), (14, 1424130), (15, 1329188), (20, 996891), (21, 949420), (28, 712065), (30, 664594), (35, 569652), (37, 538860), (42, 474710), (60, 332297), (70, 284826), (74, 269430), (84, 237355), (105, 189884), (111, 179620), (140, 142413), (148, 134715), (185, 107772), (210, 94942), (222, 89810), (259, 76980), (370, 53886), (420, 47471), (444, 44905), (518, 38490), (555, 35924), (740, 26943), (777, 25660), (1036, 19245), (1110, 17962), (1283, 15540), (1295, 15396), (1554, 12830), (2220, 8981), (2566, 7770), (2590, 7698), (3108, 6415), (3849, 5180), (3885, 5132)]