21402128

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{439}}^1$

素因数の和:735

約数の個数: 40

約数和(自身を含む): 45503040

約数和(自身を除く): 24100912

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 277, 439, 554, 878, 1108, 1756, 2216, 3047, 3512, 4432, 4829, 6094, 7024, 9658, 12188, 19316, 24376, 38632, 48752, 77264, 121603, 243206, 486412, 972824, 1337633, 1945648, 2675266, 5350532, 10701064, 21402128]

約数ペア:

[(1, 21402128), (2, 10701064), (4, 5350532), (8, 2675266), (11, 1945648), (16, 1337633), (22, 972824), (44, 486412), (88, 243206), (176, 121603), (277, 77264), (439, 48752), (554, 38632), (878, 24376), (1108, 19316), (1756, 12188), (2216, 9658), (3047, 7024), (3512, 6094), (4432, 4829)]