21318843

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{6007}}^1$

素因数の和:6043

約数の個数: 24

約数和(自身を含む): 35182848

約数和(自身を除く): 13864005

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 6007, 18021, 42049, 78091, 126147, 234273, 546637, 1015183, 1639911, 3045549, 7106281, 21318843]

約数ペア:

[(1, 21318843), (3, 7106281), (7, 3045549), (13, 1639911), (21, 1015183), (39, 546637), (91, 234273), (169, 126147), (273, 78091), (507, 42049), (1183, 18021), (3549, 6007)]