278331395

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{142369}}^1$

素因数の和:142414

約数の個数: 16

約数和(自身を含む): 369023040

約数和(自身を除く): 90691645

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 142369, 711845, 2420273, 3274487, 12101365, 16372435, 55666279, 278331395]

約数ペア:

[(1, 278331395), (5, 55666279), (17, 16372435), (23, 12101365), (85, 3274487), (115, 2420273), (391, 711845), (1955, 142369)]