208055421

素因数分解:

$3^2\times 7^2\times {\mathrm{471781}}^1$

素因数の和:471801

約数の個数: 18

約数和(自身を含む): 349590462

約数和(自身を除く): 141535041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 471781, 1415343, 3302467, 4246029, 9907401, 23117269, 29722203, 69351807, 208055421]

約数ペア:

[(1, 208055421), (3, 69351807), (7, 29722203), (9, 23117269), (21, 9907401), (49, 4246029), (63, 3302467), (147, 1415343), (441, 471781)]