1639398418

素因数分解:

$2^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{278147}}^1$

素因数の和:278577

約数の個数: 16

約数和(自身を含む): 2817082944

約数和(自身を除く): 1177684526

約数列:

[1, 2, 7, 14, 421, 842, 2947, 5894, 278147, 556294, 1947029, 3894058, 117099887, 234199774, 819699209, 1639398418]

約数ペア:

[(1, 1639398418), (2, 819699209), (7, 234199774), (14, 117099887), (421, 3894058), (842, 1947029), (2947, 556294), (5894, 278147)]