211345281

素因数分解:

$3^4\times 7^3\times {\mathrm{7607}}^1$

素因数の和:7640

約数の個数: 40

約数和(自身を含む): 368227200

約数和(自身を除く): 156881919

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 1029, 1323, 3087, 3969, 7607, 9261, 22821, 27783, 53249, 68463, 159747, 205389, 372743, 479241, 616167, 1118229, 1437723, 2609201, 3354687, 4313169, 7827603, 10064061, 23482809, 30192183, 70448427, 211345281]

約数ペア:

[(1, 211345281), (3, 70448427), (7, 30192183), (9, 23482809), (21, 10064061), (27, 7827603), (49, 4313169), (63, 3354687), (81, 2609201), (147, 1437723), (189, 1118229), (343, 616167), (441, 479241), (567, 372743), (1029, 205389), (1323, 159747), (3087, 68463), (3969, 53249), (7607, 27783), (9261, 22821)]