20729178

素因数分解:

$2^1\times 3^2\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 46332000

約数和(自身を除く): 25602822

約数列:

[1, 2, 3, 6, 9, 18, 59, 118, 131, 149, 177, 262, 298, 354, 393, 447, 531, 786, 894, 1062, 1179, 1341, 2358, 2682, 7729, 8791, 15458, 17582, 19519, 23187, 26373, 39038, 46374, 52746, 58557, 69561, 79119, 117114, 139122, 158238, 175671, 351342, 1151621, 2303242, 3454863, 6909726, 10364589, 20729178]

約数ペア:

[(1, 20729178), (2, 10364589), (3, 6909726), (6, 3454863), (9, 2303242), (18, 1151621), (59, 351342), (118, 175671), (131, 158238), (149, 139122), (177, 117114), (262, 79119), (298, 69561), (354, 58557), (393, 52746), (447, 46374), (531, 39038), (786, 26373), (894, 23187), (1062, 19519), (1179, 17582), (1341, 15458), (2358, 8791), (2682, 7729)]