208530819

素因数分解:

$3^2\times 7^2\times {\mathrm{472859}}^1$

素因数の和:472879

約数の個数: 18

約数和(自身を含む): 350389260

約数和(自身を除く): 141858441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 472859, 1418577, 3310013, 4255731, 9930039, 23170091, 29790117, 69510273, 208530819]

約数ペア:

[(1, 208530819), (3, 69510273), (7, 29790117), (9, 23170091), (21, 9930039), (49, 4255731), (63, 3310013), (147, 1418577), (441, 472859)]