21834280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 53424000

約数和(自身を除く): 31589720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 199, 211, 260, 398, 422, 520, 796, 844, 995, 1055, 1592, 1688, 1990, 2110, 2587, 2743, 3980, 4220, 5174, 5486, 7960, 8440, 10348, 10972, 12935, 13715, 20696, 21944, 25870, 27430, 41989, 51740, 54860, 83978, 103480, 109720, 167956, 209945, 335912, 419890, 545857, 839780, 1091714, 1679560, 2183428, 2729285, 4366856, 5458570, 10917140, 21834280]

約数ペア:

[(1, 21834280), (2, 10917140), (4, 5458570), (5, 4366856), (8, 2729285), (10, 2183428), (13, 1679560), (20, 1091714), (26, 839780), (40, 545857), (52, 419890), (65, 335912), (104, 209945), (130, 167956), (199, 109720), (211, 103480), (260, 83978), (398, 54860), (422, 51740), (520, 41989), (796, 27430), (844, 25870), (995, 21944), (1055, 20696), (1592, 13715), (1688, 12935), (1990, 10972), (2110, 10348), (2587, 8440), (2743, 7960), (3980, 5486), (4220, 5174)]