81687204

素因数分解:

$2^2\times 3^4\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:207

約数の個数: 120

約数和(自身を含む): 223933248

約数和(自身を除く): 142246044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 53, 54, 67, 71, 81, 106, 108, 134, 142, 159, 162, 201, 212, 213, 268, 284, 318, 324, 402, 426, 477, 603, 636, 639, 804, 852, 954, 1206, 1278, 1431, 1809, 1908, 1917, 2412, 2556, 2862, 3551, 3618, 3763, 3834, 4293, 4757, 5427, 5724, 5751, 7102, 7236, 7526, 7668, 8586, 9514, 10653, 10854, 11289, 11502, 14204, 14271, 15052, 17172, 19028, 21306, 21708, 22578, 23004, 28542, 31959, 33867, 42612, 42813, 45156, 57084, 63918, 67734, 85626, 95877, 101601, 127836, 128439, 135468, 171252, 191754, 203202, 252121, 256878, 287631, 304803, 383508, 385317, 406404, 504242, 513756, 575262, 609606, 756363, 770634, 1008484, 1150524, 1219212, 1512726, 1541268, 2269089, 3025452, 4538178, 6807267, 9076356, 13614534, 20421801, 27229068, 40843602, 81687204]

約数ペア:

[(1, 81687204), (2, 40843602), (3, 27229068), (4, 20421801), (6, 13614534), (9, 9076356), (12, 6807267), (18, 4538178), (27, 3025452), (36, 2269089), (53, 1541268), (54, 1512726), (67, 1219212), (71, 1150524), (81, 1008484), (106, 770634), (108, 756363), (134, 609606), (142, 575262), (159, 513756), (162, 504242), (201, 406404), (212, 385317), (213, 383508), (268, 304803), (284, 287631), (318, 256878), (324, 252121), (402, 203202), (426, 191754), (477, 171252), (603, 135468), (636, 128439), (639, 127836), (804, 101601), (852, 95877), (954, 85626), (1206, 67734), (1278, 63918), (1431, 57084), (1809, 45156), (1908, 42813), (1917, 42612), (2412, 33867), (2556, 31959), (2862, 28542), (3551, 23004), (3618, 22578), (3763, 21708), (3834, 21306), (4293, 19028), (4757, 17172), (5427, 15052), (5724, 14271), (5751, 14204), (7102, 11502), (7236, 11289), (7526, 10854), (7668, 10653), (8586, 9514)]