19898216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{653}}^1$

素因数の和:965

約数の個数: 32

約数和(自身を含む): 40377960

約数和(自身を除く): 20479744

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 293, 586, 653, 1172, 1306, 2344, 2612, 3809, 5224, 7618, 8489, 15236, 16978, 30472, 33956, 67912, 191329, 382658, 765316, 1530632, 2487277, 4974554, 9949108, 19898216]

約数ペア:

[(1, 19898216), (2, 9949108), (4, 4974554), (8, 2487277), (13, 1530632), (26, 765316), (52, 382658), (104, 191329), (293, 67912), (586, 33956), (653, 30472), (1172, 16978), (1306, 15236), (2344, 8489), (2612, 7618), (3809, 5224)]