21801291281

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{2111}}^1$

素因数の和:2366

約数の個数: 48

約数和(自身を含む): 27909826560

約数和(自身を除く): 6108535279

約数列:

[1, 7, 11, 77, 89, 121, 137, 623, 847, 959, 979, 1507, 2111, 6853, 10549, 10769, 12193, 14777, 16577, 23221, 75383, 85351, 116039, 134123, 162547, 187879, 255431, 289207, 938861, 1315153, 1475353, 1788017, 2024449, 2066669, 3181277, 10327471, 14466683, 22268939, 22733359, 25739423, 34994047, 159133513, 180175961, 244958329, 283133653, 1981935571, 3114470183, 21801291281]

約数ペア:

[(1, 21801291281), (7, 3114470183), (11, 1981935571), (77, 283133653), (89, 244958329), (121, 180175961), (137, 159133513), (623, 34994047), (847, 25739423), (959, 22733359), (979, 22268939), (1507, 14466683), (2111, 10327471), (6853, 3181277), (10549, 2066669), (10769, 2024449), (12193, 1788017), (14777, 1475353), (16577, 1315153), (23221, 938861), (75383, 289207), (85351, 255431), (116039, 187879), (134123, 162547)]