81878784

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 240374400

約数和(自身を除く): 158495616

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 59, 64, 78, 96, 104, 118, 128, 139, 156, 177, 192, 208, 236, 256, 278, 312, 354, 384, 416, 417, 472, 556, 624, 708, 767, 768, 832, 834, 944, 1112, 1248, 1416, 1534, 1664, 1668, 1807, 1888, 2224, 2301, 2496, 2832, 3068, 3328, 3336, 3614, 3776, 4448, 4602, 4992, 5421, 5664, 6136, 6672, 7228, 7552, 8201, 8896, 9204, 9984, 10842, 11328, 12272, 13344, 14456, 15104, 16402, 17792, 18408, 21684, 22656, 24544, 24603, 26688, 28912, 32804, 35584, 36816, 43368, 45312, 49088, 49206, 53376, 57824, 65608, 73632, 86736, 98176, 98412, 106613, 106752, 115648, 131216, 147264, 173472, 196352, 196824, 213226, 231296, 262432, 294528, 319839, 346944, 393648, 426452, 462592, 524864, 589056, 639678, 693888, 787296, 852904, 1049728, 1279356, 1387776, 1574592, 1705808, 2099456, 2558712, 3149184, 3411616, 5117424, 6298368, 6823232, 10234848, 13646464, 20469696, 27292928, 40939392, 81878784]

約数ペア:

[(1, 81878784), (2, 40939392), (3, 27292928), (4, 20469696), (6, 13646464), (8, 10234848), (12, 6823232), (13, 6298368), (16, 5117424), (24, 3411616), (26, 3149184), (32, 2558712), (39, 2099456), (48, 1705808), (52, 1574592), (59, 1387776), (64, 1279356), (78, 1049728), (96, 852904), (104, 787296), (118, 693888), (128, 639678), (139, 589056), (156, 524864), (177, 462592), (192, 426452), (208, 393648), (236, 346944), (256, 319839), (278, 294528), (312, 262432), (354, 231296), (384, 213226), (416, 196824), (417, 196352), (472, 173472), (556, 147264), (624, 131216), (708, 115648), (767, 106752), (768, 106613), (832, 98412), (834, 98176), (944, 86736), (1112, 73632), (1248, 65608), (1416, 57824), (1534, 53376), (1664, 49206), (1668, 49088), (1807, 45312), (1888, 43368), (2224, 36816), (2301, 35584), (2496, 32804), (2832, 28912), (3068, 26688), (3328, 24603), (3336, 24544), (3614, 22656), (3776, 21684), (4448, 18408), (4602, 17792), (4992, 16402), (5421, 15104), (5664, 14456), (6136, 13344), (6672, 12272), (7228, 11328), (7552, 10842), (8201, 9984), (8896, 9204)]