209819907

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{337}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 350113920

約数和(自身を除く): 140294013

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 331, 337, 627, 993, 1011, 1881, 2979, 3033, 3641, 3707, 6289, 6403, 10923, 11121, 18867, 19209, 32769, 33363, 56601, 57627, 69179, 70433, 111547, 207537, 211299, 334641, 622611, 633897, 1003923, 1227017, 2119393, 3681051, 6358179, 11043153, 19074537, 23313323, 69939969, 209819907]

約数ペア:

[(1, 209819907), (3, 69939969), (9, 23313323), (11, 19074537), (19, 11043153), (33, 6358179), (57, 3681051), (99, 2119393), (171, 1227017), (209, 1003923), (331, 633897), (337, 622611), (627, 334641), (993, 211299), (1011, 207537), (1881, 111547), (2979, 70433), (3033, 69179), (3641, 57627), (3707, 56601), (6289, 33363), (6403, 32769), (10923, 19209), (11121, 18867)]