11818820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{347}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 27010368

約数和(自身を除く): 15191548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 131, 260, 262, 347, 524, 655, 694, 1310, 1388, 1703, 1735, 2620, 3406, 3470, 4511, 6812, 6940, 8515, 9022, 17030, 18044, 22555, 34060, 45110, 45457, 90220, 90914, 181828, 227285, 454570, 590941, 909140, 1181882, 2363764, 2954705, 5909410, 11818820]

約数ペア:

[(1, 11818820), (2, 5909410), (4, 2954705), (5, 2363764), (10, 1181882), (13, 909140), (20, 590941), (26, 454570), (52, 227285), (65, 181828), (130, 90914), (131, 90220), (260, 45457), (262, 45110), (347, 34060), (524, 22555), (655, 18044), (694, 17030), (1310, 9022), (1388, 8515), (1703, 6940), (1735, 6812), (2620, 4511), (3406, 3470)]