21161608

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{719}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 42940800

約数和(自身を除く): 21779192

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 283, 566, 719, 1132, 1438, 2264, 2876, 3679, 5752, 7358, 9347, 14716, 18694, 29432, 37388, 74776, 203477, 406954, 813908, 1627816, 2645201, 5290402, 10580804, 21161608]

約数ペア:

[(1, 21161608), (2, 10580804), (4, 5290402), (8, 2645201), (13, 1627816), (26, 813908), (52, 406954), (104, 203477), (283, 74776), (566, 37388), (719, 29432), (1132, 18694), (1438, 14716), (2264, 9347), (2876, 7358), (3679, 5752)]