21754064

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{719}}^1$

素因数の和:819

約数の個数: 40

約数和(自身を含む): 44282880

約数和(自身を除く): 22528816

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 244, 248, 488, 496, 719, 976, 1438, 1891, 2876, 3782, 5752, 7564, 11504, 15128, 22289, 30256, 43859, 44578, 87718, 89156, 175436, 178312, 350872, 356624, 701744, 1359629, 2719258, 5438516, 10877032, 21754064]

約数ペア:

[(1, 21754064), (2, 10877032), (4, 5438516), (8, 2719258), (16, 1359629), (31, 701744), (61, 356624), (62, 350872), (122, 178312), (124, 175436), (244, 89156), (248, 87718), (488, 44578), (496, 43859), (719, 30256), (976, 22289), (1438, 15128), (1891, 11504), (2876, 7564), (3782, 5752)]