2756240

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 6481728

約数和(自身を除く): 3725488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 263, 524, 526, 655, 1048, 1052, 1310, 1315, 2096, 2104, 2620, 2630, 4208, 5240, 5260, 10480, 10520, 21040, 34453, 68906, 137812, 172265, 275624, 344530, 551248, 689060, 1378120, 2756240]

約数ペア:

[(1, 2756240), (2, 1378120), (4, 689060), (5, 551248), (8, 344530), (10, 275624), (16, 172265), (20, 137812), (40, 68906), (80, 34453), (131, 21040), (262, 10520), (263, 10480), (524, 5260), (526, 5240), (655, 4208), (1048, 2630), (1052, 2620), (1310, 2104), (1315, 2096)]