278364190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{69073}}^1$

素因数の和:69124

約数の個数: 32

約数和(自身を含む): 557012736

約数和(自身を除く): 278648546

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 69073, 138146, 345365, 690730, 897949, 1795898, 2141263, 4282526, 4489745, 8979490, 10706315, 21412630, 27836419, 55672838, 139182095, 278364190]

約数ペア:

[(1, 278364190), (2, 139182095), (5, 55672838), (10, 27836419), (13, 21412630), (26, 10706315), (31, 8979490), (62, 4489745), (65, 4282526), (130, 2141263), (155, 1795898), (310, 897949), (403, 690730), (806, 345365), (2015, 138146), (4030, 69073)]