21243761

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{16229}}^1$

素因数の和:16264

約数の個数: 16

約数和(自身を含む): 28045440

約数和(自身を除く): 6801679

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 16229, 113603, 178519, 275893, 1249633, 1931251, 3034823, 21243761]

約数ペア:

[(1, 21243761), (7, 3034823), (11, 1931251), (17, 1249633), (77, 275893), (119, 178519), (187, 113603), (1309, 16229)]