821996

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 1698816

約数和(自身を除く): 876820

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 947, 1894, 3788, 6629, 13258, 26516, 29357, 58714, 117428, 205499, 410998, 821996]

約数ペア:

[(1, 821996), (2, 410998), (4, 205499), (7, 117428), (14, 58714), (28, 29357), (31, 26516), (62, 13258), (124, 6629), (217, 3788), (434, 1894), (868, 947)]