8957780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 20490624

約数和(自身を除く): 11532844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 263, 524, 526, 655, 1052, 1310, 1315, 1703, 2620, 2630, 3406, 3419, 5260, 6812, 6838, 8515, 13676, 17030, 17095, 34060, 34190, 34453, 68380, 68906, 137812, 172265, 344530, 447889, 689060, 895778, 1791556, 2239445, 4478890, 8957780]

約数ペア:

[(1, 8957780), (2, 4478890), (4, 2239445), (5, 1791556), (10, 895778), (13, 689060), (20, 447889), (26, 344530), (52, 172265), (65, 137812), (130, 68906), (131, 68380), (260, 34453), (262, 34190), (263, 34060), (524, 17095), (526, 17030), (655, 13676), (1052, 8515), (1310, 6838), (1315, 6812), (1703, 5260), (2620, 3419), (2630, 3406)]