20291215347

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{557}}^2$

素因数の和:1189

約数の個数: 54

約数和(自身を含む): 32534033532

約数和(自身を除く): 12242818185

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 169, 387, 507, 557, 559, 1521, 1671, 1677, 5013, 5031, 7241, 7267, 21723, 21801, 23951, 65169, 65403, 71853, 94133, 215559, 282399, 310249, 311363, 847197, 930747, 934089, 2792241, 2802267, 4033237, 4047719, 12099711, 12143157, 13340707, 36299133, 36429471, 40022121, 52432081, 120066363, 157296243, 173429191, 471888729, 520287573, 1560862719, 2254579483, 6763738449, 20291215347]

約数ペア:

[(1, 20291215347), (3, 6763738449), (9, 2254579483), (13, 1560862719), (39, 520287573), (43, 471888729), (117, 173429191), (129, 157296243), (169, 120066363), (387, 52432081), (507, 40022121), (557, 36429471), (559, 36299133), (1521, 13340707), (1671, 12143157), (1677, 12099711), (5013, 4047719), (5031, 4033237), (7241, 2802267), (7267, 2792241), (21723, 934089), (21801, 930747), (23951, 847197), (65169, 311363), (65403, 310249), (71853, 282399), (94133, 215559)]