20910448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{439}}^1$

素因数の和:689

約数の個数: 40

約数和(自身を含む): 43920800

約数和(自身を除く): 23010352

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 229, 439, 458, 878, 916, 1756, 1832, 2977, 3512, 3664, 5707, 5954, 7024, 11414, 11908, 22828, 23816, 45656, 47632, 91312, 100531, 201062, 402124, 804248, 1306903, 1608496, 2613806, 5227612, 10455224, 20910448]

約数ペア:

[(1, 20910448), (2, 10455224), (4, 5227612), (8, 2613806), (13, 1608496), (16, 1306903), (26, 804248), (52, 402124), (104, 201062), (208, 100531), (229, 91312), (439, 47632), (458, 45656), (878, 23816), (916, 22828), (1756, 11908), (1832, 11414), (2977, 7024), (3512, 5954), (3664, 5707)]