261381564

素因数分解:

$2^2\times 3^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{1129}}^1$

素因数の和:1307

約数の個数: 72

約数和(自身を含む): 678678000

約数和(自身を除く): 417296436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 59, 109, 118, 177, 218, 236, 327, 354, 436, 531, 654, 708, 981, 1062, 1129, 1308, 1962, 2124, 2258, 3387, 3924, 4516, 6431, 6774, 10161, 12862, 13548, 19293, 20322, 25724, 38586, 40644, 57879, 66611, 77172, 115758, 123061, 133222, 199833, 231516, 246122, 266444, 369183, 399666, 492244, 599499, 738366, 799332, 1107549, 1198998, 1476732, 2215098, 2397996, 4430196, 7260599, 14521198, 21781797, 29042396, 43563594, 65345391, 87127188, 130690782, 261381564]

約数ペア:

[(1, 261381564), (2, 130690782), (3, 87127188), (4, 65345391), (6, 43563594), (9, 29042396), (12, 21781797), (18, 14521198), (36, 7260599), (59, 4430196), (109, 2397996), (118, 2215098), (177, 1476732), (218, 1198998), (236, 1107549), (327, 799332), (354, 738366), (436, 599499), (531, 492244), (654, 399666), (708, 369183), (981, 266444), (1062, 246122), (1129, 231516), (1308, 199833), (1962, 133222), (2124, 123061), (2258, 115758), (3387, 77172), (3924, 66611), (4516, 57879), (6431, 40644), (6774, 38586), (10161, 25724), (12862, 20322), (13548, 19293)]