21448288

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 45314640

約数和(自身を除く): 23866352

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 89, 136, 178, 272, 356, 443, 544, 712, 886, 1424, 1513, 1772, 2848, 3026, 3544, 6052, 7088, 7531, 12104, 14176, 15062, 24208, 30124, 39427, 48416, 60248, 78854, 120496, 157708, 240992, 315416, 630832, 670259, 1261664, 1340518, 2681036, 5362072, 10724144, 21448288]

約数ペア:

[(1, 21448288), (2, 10724144), (4, 5362072), (8, 2681036), (16, 1340518), (17, 1261664), (32, 670259), (34, 630832), (68, 315416), (89, 240992), (136, 157708), (178, 120496), (272, 78854), (356, 60248), (443, 48416), (544, 39427), (712, 30124), (886, 24208), (1424, 15062), (1513, 14176), (1772, 12104), (2848, 7531), (3026, 7088), (3544, 6052)]