81239508

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1801}}^1$

素因数の和:1997

約数の個数: 72

約数和(自身を含む): 236134080

約数和(自身を除く): 154894572

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 179, 252, 358, 537, 716, 1074, 1253, 1611, 1801, 2148, 2506, 3222, 3602, 3759, 5012, 5403, 6444, 7204, 7518, 10806, 11277, 12607, 15036, 16209, 21612, 22554, 25214, 32418, 37821, 45108, 50428, 64836, 75642, 113463, 151284, 226926, 322379, 453852, 644758, 967137, 1289516, 1934274, 2256653, 2901411, 3868548, 4513306, 5802822, 6769959, 9026612, 11605644, 13539918, 20309877, 27079836, 40619754, 81239508]

約数ペア:

[(1, 81239508), (2, 40619754), (3, 27079836), (4, 20309877), (6, 13539918), (7, 11605644), (9, 9026612), (12, 6769959), (14, 5802822), (18, 4513306), (21, 3868548), (28, 2901411), (36, 2256653), (42, 1934274), (63, 1289516), (84, 967137), (126, 644758), (179, 453852), (252, 322379), (358, 226926), (537, 151284), (716, 113463), (1074, 75642), (1253, 64836), (1611, 50428), (1801, 45108), (2148, 37821), (2506, 32418), (3222, 25214), (3602, 22554), (3759, 21612), (5012, 16209), (5403, 15036), (6444, 12607), (7204, 11277), (7518, 10806)]