21301856

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 43609104

約数和(自身を除く): 22307248

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 113, 137, 172, 226, 274, 344, 452, 548, 688, 904, 1096, 1376, 1808, 2192, 3616, 4384, 4859, 5891, 9718, 11782, 15481, 19436, 23564, 30962, 38872, 47128, 61924, 77744, 94256, 123848, 155488, 188512, 247696, 495392, 665683, 1331366, 2662732, 5325464, 10650928, 21301856]

約数ペア:

[(1, 21301856), (2, 10650928), (4, 5325464), (8, 2662732), (16, 1331366), (32, 665683), (43, 495392), (86, 247696), (113, 188512), (137, 155488), (172, 123848), (226, 94256), (274, 77744), (344, 61924), (452, 47128), (548, 38872), (688, 30962), (904, 23564), (1096, 19436), (1376, 15481), (1808, 11782), (2192, 9718), (3616, 5891), (4384, 4859)]