21049876

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 41779584

約数和(自身を除く): 20729708

約数列:

[1, 2, 4, 17, 23, 34, 43, 46, 68, 86, 92, 172, 313, 391, 626, 731, 782, 989, 1252, 1462, 1564, 1978, 2924, 3956, 5321, 7199, 10642, 13459, 14398, 16813, 21284, 26918, 28796, 33626, 53836, 67252, 122383, 228803, 244766, 309557, 457606, 489532, 619114, 915212, 1238228, 5262469, 10524938, 21049876]

約数ペア:

[(1, 21049876), (2, 10524938), (4, 5262469), (17, 1238228), (23, 915212), (34, 619114), (43, 489532), (46, 457606), (68, 309557), (86, 244766), (92, 228803), (172, 122383), (313, 67252), (391, 53836), (626, 33626), (731, 28796), (782, 26918), (989, 21284), (1252, 16813), (1462, 14398), (1564, 13459), (1978, 10642), (2924, 7199), (3956, 5321)]