1279261360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{1913}}^1$

素因数の和:2582

約数の個数: 80

約数和(自身を含む): 3209732064

約数和(自身を除く): 1930470704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 643, 1040, 1286, 1913, 2572, 3215, 3826, 5144, 6430, 7652, 8359, 9565, 10288, 12860, 15304, 16718, 19130, 24869, 25720, 30608, 33436, 38260, 41795, 49738, 51440, 66872, 76520, 83590, 99476, 124345, 133744, 153040, 167180, 198952, 248690, 334360, 397904, 497380, 668720, 994760, 1230059, 1989520, 2460118, 4920236, 6150295, 9840472, 12300590, 15990767, 19680944, 24601180, 31981534, 49202360, 63963068, 79953835, 98404720, 127926136, 159907670, 255852272, 319815340, 639630680, 1279261360]

約数ペア:

[(1, 1279261360), (2, 639630680), (4, 319815340), (5, 255852272), (8, 159907670), (10, 127926136), (13, 98404720), (16, 79953835), (20, 63963068), (26, 49202360), (40, 31981534), (52, 24601180), (65, 19680944), (80, 15990767), (104, 12300590), (130, 9840472), (208, 6150295), (260, 4920236), (520, 2460118), (643, 1989520), (1040, 1230059), (1286, 994760), (1913, 668720), (2572, 497380), (3215, 397904), (3826, 334360), (5144, 248690), (6430, 198952), (7652, 167180), (8359, 153040), (9565, 133744), (10288, 124345), (12860, 99476), (15304, 83590), (16718, 76520), (19130, 66872), (24869, 51440), (25720, 49738), (30608, 41795), (33436, 38260)]