81406332

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1531}}^1$

素因数の和:1759

約数の個数: 72

約数和(自身を含む): 236442752

約数和(自身を除く): 155036420

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 211, 252, 422, 633, 844, 1266, 1477, 1531, 1899, 2532, 2954, 3062, 3798, 4431, 4593, 5908, 6124, 7596, 8862, 9186, 10717, 13293, 13779, 17724, 18372, 21434, 26586, 27558, 32151, 42868, 53172, 55116, 64302, 96453, 128604, 192906, 323041, 385812, 646082, 969123, 1292164, 1938246, 2261287, 2907369, 3876492, 4522574, 5814738, 6783861, 9045148, 11629476, 13567722, 20351583, 27135444, 40703166, 81406332]

約数ペア:

[(1, 81406332), (2, 40703166), (3, 27135444), (4, 20351583), (6, 13567722), (7, 11629476), (9, 9045148), (12, 6783861), (14, 5814738), (18, 4522574), (21, 3876492), (28, 2907369), (36, 2261287), (42, 1938246), (63, 1292164), (84, 969123), (126, 646082), (211, 385812), (252, 323041), (422, 192906), (633, 128604), (844, 96453), (1266, 64302), (1477, 55116), (1531, 53172), (1899, 42868), (2532, 32151), (2954, 27558), (3062, 26586), (3798, 21434), (4431, 18372), (4593, 17724), (5908, 13779), (6124, 13293), (7596, 10717), (8862, 9186)]