278041790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{68993}}^1$

素因数の和:69044

約数の個数: 32

約数和(自身を含む): 556367616

約数和(自身を除く): 278325826

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 68993, 137986, 344965, 689930, 896909, 1793818, 2138783, 4277566, 4484545, 8969090, 10693915, 21387830, 27804179, 55608358, 139020895, 278041790]

約数ペア:

[(1, 278041790), (2, 139020895), (5, 55608358), (10, 27804179), (13, 21387830), (26, 10693915), (31, 8969090), (62, 4484545), (65, 4277566), (130, 2138783), (155, 1793818), (310, 896909), (403, 689930), (806, 344965), (2015, 137986), (4030, 68993)]