280135515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{761}}^1$

素因数の和:900

約数の個数: 64

約数和(自身を含む): 516160512

約数和(自身を除く): 236024997

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 97, 115, 165, 253, 291, 345, 485, 759, 761, 1067, 1265, 1455, 2231, 2283, 3201, 3795, 3805, 5335, 6693, 8371, 11155, 11415, 16005, 17503, 24541, 25113, 33465, 41855, 52509, 73623, 73817, 87515, 122705, 125565, 192533, 221451, 262545, 368115, 369085, 577599, 811987, 962665, 1107255, 1697791, 2435961, 2887995, 4059935, 5093373, 8488955, 12179805, 18675701, 25466865, 56027103, 93378505, 280135515]

約数ペア:

[(1, 280135515), (3, 93378505), (5, 56027103), (11, 25466865), (15, 18675701), (23, 12179805), (33, 8488955), (55, 5093373), (69, 4059935), (97, 2887995), (115, 2435961), (165, 1697791), (253, 1107255), (291, 962665), (345, 811987), (485, 577599), (759, 369085), (761, 368115), (1067, 262545), (1265, 221451), (1455, 192533), (2231, 125565), (2283, 122705), (3201, 87515), (3795, 73817), (3805, 73623), (5335, 52509), (6693, 41855), (8371, 33465), (11155, 25113), (11415, 24541), (16005, 17503)]