8281520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7963}}^1$

素因数の和:7989

約数の個数: 40

約数和(自身を含む): 20738256

約数和(自身を除く): 12456736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7963, 15926, 31852, 39815, 63704, 79630, 103519, 127408, 159260, 207038, 318520, 414076, 517595, 637040, 828152, 1035190, 1656304, 2070380, 4140760, 8281520]

約数ペア:

[(1, 8281520), (2, 4140760), (4, 2070380), (5, 1656304), (8, 1035190), (10, 828152), (13, 637040), (16, 517595), (20, 414076), (26, 318520), (40, 207038), (52, 159260), (65, 127408), (80, 103519), (104, 79630), (130, 63704), (208, 39815), (260, 31852), (520, 15926), (1040, 7963)]