31704680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{569}}^1$

素因数の和:786

約数の個数: 64

約数和(自身を含む): 82080000

約数和(自身を除く): 50375320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 569, 796, 995, 1138, 1393, 1592, 1990, 2276, 2786, 2845, 3980, 3983, 4552, 5572, 5690, 6965, 7960, 7966, 11144, 11380, 13930, 15932, 19915, 22760, 27860, 31864, 39830, 55720, 79660, 113231, 159320, 226462, 452924, 566155, 792617, 905848, 1132310, 1585234, 2264620, 3170468, 3963085, 4529240, 6340936, 7926170, 15852340, 31704680]

約数ペア:

[(1, 31704680), (2, 15852340), (4, 7926170), (5, 6340936), (7, 4529240), (8, 3963085), (10, 3170468), (14, 2264620), (20, 1585234), (28, 1132310), (35, 905848), (40, 792617), (56, 566155), (70, 452924), (140, 226462), (199, 159320), (280, 113231), (398, 79660), (569, 55720), (796, 39830), (995, 31864), (1138, 27860), (1393, 22760), (1592, 19915), (1990, 15932), (2276, 13930), (2786, 11380), (2845, 11144), (3980, 7966), (3983, 7960), (4552, 6965), (5572, 5690)]