991504

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2038

約数の個数: 20

約数和(自身を含む): 1984000

約数和(自身を除く): 992496

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 1999, 3998, 7996, 15992, 31984, 61969, 123938, 247876, 495752, 991504]

約数ペア:

[(1, 991504), (2, 495752), (4, 247876), (8, 123938), (16, 61969), (31, 31984), (62, 15992), (124, 7996), (248, 3998), (496, 1999)]