20185503280

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{17881}}^1$

素因数の和:18134

約数の個数: 80

約数和(自身を含む): 47735498304

約数和(自身を除く): 27549995024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 137, 206, 274, 412, 515, 548, 685, 824, 1030, 1096, 1370, 1648, 2060, 2192, 2740, 4120, 5480, 8240, 10960, 14111, 17881, 28222, 35762, 56444, 70555, 71524, 89405, 112888, 141110, 143048, 178810, 225776, 282220, 286096, 357620, 564440, 715240, 1128880, 1430480, 1841743, 2449697, 3683486, 4899394, 7366972, 9208715, 9798788, 12248485, 14733944, 18417430, 19597576, 24496970, 29467888, 36834860, 39195152, 48993940, 73669720, 97987880, 147339440, 195975760, 252318791, 504637582, 1009275164, 1261593955, 2018550328, 2523187910, 4037100656, 5046375820, 10092751640, 20185503280]

約数ペア:

[(1, 20185503280), (2, 10092751640), (4, 5046375820), (5, 4037100656), (8, 2523187910), (10, 2018550328), (16, 1261593955), (20, 1009275164), (40, 504637582), (80, 252318791), (103, 195975760), (137, 147339440), (206, 97987880), (274, 73669720), (412, 48993940), (515, 39195152), (548, 36834860), (685, 29467888), (824, 24496970), (1030, 19597576), (1096, 18417430), (1370, 14733944), (1648, 12248485), (2060, 9798788), (2192, 9208715), (2740, 7366972), (4120, 4899394), (5480, 3683486), (8240, 2449697), (10960, 1841743), (14111, 1430480), (17881, 1128880), (28222, 715240), (35762, 564440), (56444, 357620), (70555, 286096), (71524, 282220), (89405, 225776), (112888, 178810), (141110, 143048)]