81239778

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:200

約数の個数: 96

約数和(自身を含む): 192471552

約数和(自身を除く): 111231774

約数列:

[1, 2, 3, 6, 9, 18, 31, 41, 53, 62, 67, 82, 93, 106, 123, 134, 159, 186, 201, 246, 279, 318, 369, 402, 477, 558, 603, 738, 954, 1206, 1271, 1643, 2077, 2173, 2542, 2747, 3286, 3551, 3813, 4154, 4346, 4929, 5494, 6231, 6519, 7102, 7626, 8241, 9858, 10653, 11439, 12462, 13038, 14787, 16482, 18693, 19557, 21306, 22878, 24723, 29574, 31959, 37386, 39114, 49446, 63918, 67363, 85157, 110081, 134726, 145591, 170314, 202089, 220162, 255471, 291182, 330243, 404178, 436773, 510942, 606267, 660486, 766413, 873546, 990729, 1212534, 1310319, 1532826, 1981458, 2620638, 4513321, 9026642, 13539963, 27079926, 40619889, 81239778]

約数ペア:

[(1, 81239778), (2, 40619889), (3, 27079926), (6, 13539963), (9, 9026642), (18, 4513321), (31, 2620638), (41, 1981458), (53, 1532826), (62, 1310319), (67, 1212534), (82, 990729), (93, 873546), (106, 766413), (123, 660486), (134, 606267), (159, 510942), (186, 436773), (201, 404178), (246, 330243), (279, 291182), (318, 255471), (369, 220162), (402, 202089), (477, 170314), (558, 145591), (603, 134726), (738, 110081), (954, 85157), (1206, 67363), (1271, 63918), (1643, 49446), (2077, 39114), (2173, 37386), (2542, 31959), (2747, 29574), (3286, 24723), (3551, 22878), (3813, 21306), (4154, 19557), (4346, 18693), (4929, 16482), (5494, 14787), (6231, 13038), (6519, 12462), (7102, 11439), (7626, 10653), (8241, 9858)]