78540670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19489}}^1$

素因数の和:19540

約数の個数: 32

約数和(自身を含む): 157167360

約数和(自身を除く): 78626690

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 19489, 38978, 97445, 194890, 253357, 506714, 604159, 1208318, 1266785, 2533570, 3020795, 6041590, 7854067, 15708134, 39270335, 78540670]

約数ペア:

[(1, 78540670), (2, 39270335), (5, 15708134), (10, 7854067), (13, 6041590), (26, 3020795), (31, 2533570), (62, 1266785), (65, 1208318), (130, 604159), (155, 506714), (310, 253357), (403, 194890), (806, 97445), (2015, 38978), (4030, 19489)]