21273273

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2207}}^1$

素因数の和:2243

約数の個数: 40

約数和(自身を含む): 38472192

約数和(自身を除く): 17198919

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 357, 459, 567, 1071, 1377, 2207, 3213, 6621, 9639, 15449, 19863, 37519, 46347, 59589, 112557, 139041, 178767, 262633, 337671, 417123, 787899, 1013013, 1251369, 2363697, 3039039, 7091091, 21273273]

約数ペア:

[(1, 21273273), (3, 7091091), (7, 3039039), (9, 2363697), (17, 1251369), (21, 1013013), (27, 787899), (51, 417123), (63, 337671), (81, 262633), (119, 178767), (153, 139041), (189, 112557), (357, 59589), (459, 46347), (567, 37519), (1071, 19863), (1377, 15449), (2207, 9639), (3213, 6621)]