721655289

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 1098624384

約数和(自身を除く): 376969095

約数列:

[1, 3, 9, 37, 71, 111, 131, 213, 233, 333, 393, 639, 699, 1179, 2097, 2627, 4847, 7881, 8621, 9301, 14541, 16543, 23643, 25863, 27903, 30523, 43623, 49629, 77589, 83709, 91569, 148887, 274707, 344137, 612091, 1032411, 1129351, 1836273, 2167133, 3097233, 3388053, 5508819, 6501399, 10164159, 19504197, 80183921, 240551763, 721655289]

約数ペア:

[(1, 721655289), (3, 240551763), (9, 80183921), (37, 19504197), (71, 10164159), (111, 6501399), (131, 5508819), (213, 3388053), (233, 3097233), (333, 2167133), (393, 1836273), (639, 1129351), (699, 1032411), (1179, 612091), (2097, 344137), (2627, 274707), (4847, 148887), (7881, 91569), (8621, 83709), (9301, 77589), (14541, 49629), (16543, 43623), (23643, 30523), (25863, 27903)]