21809776

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{443}}^1$

素因数の和:649

約数の個数: 40

約数和(自身を含む): 45090864

約数和(自身を除く): 23281088

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 181, 272, 362, 443, 724, 886, 1448, 1772, 2896, 3077, 3544, 6154, 7088, 7531, 12308, 15062, 24616, 30124, 49232, 60248, 80183, 120496, 160366, 320732, 641464, 1282928, 1363111, 2726222, 5452444, 10904888, 21809776]

約数ペア:

[(1, 21809776), (2, 10904888), (4, 5452444), (8, 2726222), (16, 1363111), (17, 1282928), (34, 641464), (68, 320732), (136, 160366), (181, 120496), (272, 80183), (362, 60248), (443, 49232), (724, 30124), (886, 24616), (1448, 15062), (1772, 12308), (2896, 7531), (3077, 7088), (3544, 6154)]