21430816

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{569}}^1$

素因数の和:697

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 25108544

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 107, 176, 214, 352, 428, 569, 856, 1138, 1177, 1712, 2276, 2354, 3424, 4552, 4708, 6259, 9104, 9416, 12518, 18208, 18832, 25036, 37664, 50072, 60883, 100144, 121766, 200288, 243532, 487064, 669713, 974128, 1339426, 1948256, 2678852, 5357704, 10715408, 21430816]

約数ペア:

[(1, 21430816), (2, 10715408), (4, 5357704), (8, 2678852), (11, 1948256), (16, 1339426), (22, 974128), (32, 669713), (44, 487064), (88, 243532), (107, 200288), (176, 121766), (214, 100144), (352, 60883), (428, 50072), (569, 37664), (856, 25036), (1138, 18832), (1177, 18208), (1712, 12518), (2276, 9416), (2354, 9104), (3424, 6259), (4552, 4708)]