20002928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1277}}^1$

素因数の和:1385

約数の個数: 40

約数和(自身を含む): 42787440

約数和(自身を除く): 22784512

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 89, 176, 178, 356, 712, 979, 1277, 1424, 1958, 2554, 3916, 5108, 7832, 10216, 14047, 15664, 20432, 28094, 56188, 112376, 113653, 224752, 227306, 454612, 909224, 1250183, 1818448, 2500366, 5000732, 10001464, 20002928]

約数ペア:

[(1, 20002928), (2, 10001464), (4, 5000732), (8, 2500366), (11, 1818448), (16, 1250183), (22, 909224), (44, 454612), (88, 227306), (89, 224752), (176, 113653), (178, 112376), (356, 56188), (712, 28094), (979, 20432), (1277, 15664), (1424, 14047), (1958, 10216), (2554, 7832), (3916, 5108)]