19999376

素因数分解:

$2^4\times {\mathrm{149}}^1\times {\mathrm{8389}}^1$

素因数の和:8546

約数の個数: 20

約数和(自身を含む): 39013500

約数和(自身を除く): 19014124

約数列:

[1, 2, 4, 8, 16, 149, 298, 596, 1192, 2384, 8389, 16778, 33556, 67112, 134224, 1249961, 2499922, 4999844, 9999688, 19999376]

約数ペア:

[(1, 19999376), (2, 9999688), (4, 4999844), (8, 2499922), (16, 1249961), (149, 134224), (298, 67112), (596, 33556), (1192, 16778), (2384, 8389)]