21356170

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1303}}^1$

素因数の和:1470

約数の個数: 32

約数和(自身を含む): 42249600

約数和(自身を除く): 20893430

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1303, 1490, 1639, 2606, 3278, 6515, 8195, 13030, 14333, 16390, 28666, 71665, 143330, 194147, 388294, 970735, 1941470, 2135617, 4271234, 10678085, 21356170]

約数ペア:

[(1, 21356170), (2, 10678085), (5, 4271234), (10, 2135617), (11, 1941470), (22, 970735), (55, 388294), (110, 194147), (149, 143330), (298, 71665), (745, 28666), (1303, 16390), (1490, 14333), (1639, 13030), (2606, 8195), (3278, 6515)]