21000369705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{165703}}^1$

素因数の和:165806

約数の個数: 64

約数和(自身を含む): 41232457728

約数和(自身を除く): 20232088023

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 71, 85, 105, 119, 213, 255, 355, 357, 497, 595, 1065, 1207, 1491, 1785, 2485, 3621, 6035, 7455, 8449, 18105, 25347, 42245, 126735, 165703, 497109, 828515, 1159921, 2485545, 2816951, 3479763, 5799605, 8450853, 11764913, 14084755, 17398815, 19718657, 35294739, 42254265, 58824565, 59155971, 82354391, 98593285, 176473695, 200003521, 247063173, 295779855, 411771955, 600010563, 1000017605, 1235315865, 1400024647, 3000052815, 4200073941, 7000123235, 21000369705]

約数ペア:

[(1, 21000369705), (3, 7000123235), (5, 4200073941), (7, 3000052815), (15, 1400024647), (17, 1235315865), (21, 1000017605), (35, 600010563), (51, 411771955), (71, 295779855), (85, 247063173), (105, 200003521), (119, 176473695), (213, 98593285), (255, 82354391), (355, 59155971), (357, 58824565), (497, 42254265), (595, 35294739), (1065, 19718657), (1207, 17398815), (1491, 14084755), (1785, 11764913), (2485, 8450853), (3621, 5799605), (6035, 3479763), (7455, 2816951), (8449, 2485545), (18105, 1159921), (25347, 828515), (42245, 497109), (126735, 165703)]