21548247

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{863}}^1$

素因数の和:943

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13288233

約数列:

[1, 3, 7, 21, 29, 41, 87, 123, 203, 287, 609, 861, 863, 1189, 2589, 3567, 6041, 8323, 18123, 24969, 25027, 35383, 75081, 106149, 175189, 247681, 525567, 743043, 1026107, 3078321, 7182749, 21548247]

約数ペア:

[(1, 21548247), (3, 7182749), (7, 3078321), (21, 1026107), (29, 743043), (41, 525567), (87, 247681), (123, 175189), (203, 106149), (287, 75081), (609, 35383), (861, 25027), (863, 24969), (1189, 18123), (2589, 8323), (3567, 6041)]