258426220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{52313}}^1$

素因数の和:52354

約数の個数: 48

約数和(自身を含む): 615212640

約数和(自身を除く): 356786420

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 52313, 104626, 209252, 261565, 523130, 680069, 993947, 1046260, 1360138, 1987894, 2720276, 3400345, 3975788, 4969735, 6800690, 9939470, 12921311, 13601380, 19878940, 25842622, 51685244, 64606555, 129213110, 258426220]

約数ペア:

[(1, 258426220), (2, 129213110), (4, 64606555), (5, 51685244), (10, 25842622), (13, 19878940), (19, 13601380), (20, 12921311), (26, 9939470), (38, 6800690), (52, 4969735), (65, 3975788), (76, 3400345), (95, 2720276), (130, 1987894), (190, 1360138), (247, 1046260), (260, 993947), (380, 680069), (494, 523130), (988, 261565), (1235, 209252), (2470, 104626), (4940, 52313)]