689060

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 1463616

約数和(自身を除く): 774556

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 263, 524, 526, 655, 1052, 1310, 1315, 2620, 2630, 5260, 34453, 68906, 137812, 172265, 344530, 689060]

約数ペア:

[(1, 689060), (2, 344530), (4, 172265), (5, 137812), (10, 68906), (20, 34453), (131, 5260), (262, 2630), (263, 2620), (524, 1315), (526, 1310), (655, 1052)]