19967968

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{20129}}^1$

素因数の和:20170

約数の個数: 24

約数和(自身を含む): 40582080

約数和(自身を除く): 20614112

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992, 20129, 40258, 80516, 161032, 322064, 623999, 644128, 1247998, 2495996, 4991992, 9983984, 19967968]

約数ペア:

[(1, 19967968), (2, 9983984), (4, 4991992), (8, 2495996), (16, 1247998), (31, 644128), (32, 623999), (62, 322064), (124, 161032), (248, 80516), (496, 40258), (992, 20129)]