278312840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{2957}}^1$

素因数の和:3162

約数の個数: 64

約数和(自身を含む): 678328560

約数和(自身を除く): 400015720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 181, 260, 362, 520, 724, 905, 1448, 1810, 2353, 2957, 3620, 4706, 5914, 7240, 9412, 11765, 11828, 14785, 18824, 23530, 23656, 29570, 38441, 47060, 59140, 76882, 94120, 118280, 153764, 192205, 307528, 384410, 535217, 768820, 1070434, 1537640, 2140868, 2676085, 4281736, 5352170, 6957821, 10704340, 13915642, 21408680, 27831284, 34789105, 55662568, 69578210, 139156420, 278312840]

約数ペア:

[(1, 278312840), (2, 139156420), (4, 69578210), (5, 55662568), (8, 34789105), (10, 27831284), (13, 21408680), (20, 13915642), (26, 10704340), (40, 6957821), (52, 5352170), (65, 4281736), (104, 2676085), (130, 2140868), (181, 1537640), (260, 1070434), (362, 768820), (520, 535217), (724, 384410), (905, 307528), (1448, 192205), (1810, 153764), (2353, 118280), (2957, 94120), (3620, 76882), (4706, 59140), (5914, 47060), (7240, 38441), (9412, 29570), (11765, 23656), (11828, 23530), (14785, 18824)]