221406647

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:492

約数の個数: 36

約数和(自身を含む): 286561800

約数和(自身を除く): 65155153

約数列:

[1, 7, 11, 49, 77, 107, 121, 349, 539, 749, 847, 1177, 2443, 3839, 5243, 5929, 8239, 12947, 17101, 26873, 37343, 42229, 57673, 90629, 188111, 261401, 295603, 410773, 634403, 1829807, 2069221, 2875411, 4518503, 20127877, 31629521, 221406647]

約数ペア:

[(1, 221406647), (7, 31629521), (11, 20127877), (49, 4518503), (77, 2875411), (107, 2069221), (121, 1829807), (349, 634403), (539, 410773), (749, 295603), (847, 261401), (1177, 188111), (2443, 90629), (3839, 57673), (5243, 42229), (5929, 37343), (8239, 26873), (12947, 17101)]