21122178

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:503

約数の個数: 64

約数和(自身を含む): 53222400

約数和(自身を除く): 32100222

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 131, 154, 231, 262, 349, 393, 462, 698, 786, 917, 1047, 1441, 1834, 2094, 2443, 2751, 2882, 3839, 4323, 4886, 5502, 7329, 7678, 8646, 10087, 11517, 14658, 20174, 23034, 26873, 30261, 45719, 53746, 60522, 80619, 91438, 137157, 161238, 274314, 320033, 502909, 640066, 960099, 1005818, 1508727, 1920198, 3017454, 3520363, 7040726, 10561089, 21122178]

約数ペア:

[(1, 21122178), (2, 10561089), (3, 7040726), (6, 3520363), (7, 3017454), (11, 1920198), (14, 1508727), (21, 1005818), (22, 960099), (33, 640066), (42, 502909), (66, 320033), (77, 274314), (131, 161238), (154, 137157), (231, 91438), (262, 80619), (349, 60522), (393, 53746), (462, 45719), (698, 30261), (786, 26873), (917, 23034), (1047, 20174), (1441, 14658), (1834, 11517), (2094, 10087), (2443, 8646), (2751, 7678), (2882, 7329), (3839, 5502), (4323, 4886)]