21530608

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1723}}^1$

素因数の和:1813

約数の個数: 40

約数和(自身を含む): 46175616

約数和(自身を除く): 24645008

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1723, 3124, 3446, 6248, 6892, 12496, 13784, 18953, 27568, 37906, 75812, 122333, 151624, 244666, 303248, 489332, 978664, 1345663, 1957328, 2691326, 5382652, 10765304, 21530608]

約数ペア:

[(1, 21530608), (2, 10765304), (4, 5382652), (8, 2691326), (11, 1957328), (16, 1345663), (22, 978664), (44, 489332), (71, 303248), (88, 244666), (142, 151624), (176, 122333), (284, 75812), (568, 37906), (781, 27568), (1136, 18953), (1562, 13784), (1723, 12496), (3124, 6892), (3446, 6248)]