21510528

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:200

約数の個数: 128

約数和(自身を含む): 63974400

約数和(自身を除く): 42463872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 32, 39, 48, 52, 62, 64, 78, 93, 96, 104, 124, 128, 139, 156, 186, 192, 208, 248, 278, 312, 372, 384, 403, 416, 417, 496, 556, 624, 744, 806, 832, 834, 992, 1112, 1209, 1248, 1488, 1612, 1664, 1668, 1807, 1984, 2224, 2418, 2496, 2976, 3224, 3336, 3614, 3968, 4309, 4448, 4836, 4992, 5421, 5952, 6448, 6672, 7228, 8618, 8896, 9672, 10842, 11904, 12896, 12927, 13344, 14456, 17236, 17792, 19344, 21684, 25792, 25854, 26688, 28912, 34472, 38688, 43368, 51584, 51708, 53376, 56017, 57824, 68944, 77376, 86736, 103416, 112034, 115648, 137888, 154752, 168051, 173472, 206832, 224068, 231296, 275776, 336102, 346944, 413664, 448136, 551552, 672204, 693888, 827328, 896272, 1344408, 1654656, 1792544, 2688816, 3585088, 5377632, 7170176, 10755264, 21510528]

約数ペア:

[(1, 21510528), (2, 10755264), (3, 7170176), (4, 5377632), (6, 3585088), (8, 2688816), (12, 1792544), (13, 1654656), (16, 1344408), (24, 896272), (26, 827328), (31, 693888), (32, 672204), (39, 551552), (48, 448136), (52, 413664), (62, 346944), (64, 336102), (78, 275776), (93, 231296), (96, 224068), (104, 206832), (124, 173472), (128, 168051), (139, 154752), (156, 137888), (186, 115648), (192, 112034), (208, 103416), (248, 86736), (278, 77376), (312, 68944), (372, 57824), (384, 56017), (403, 53376), (416, 51708), (417, 51584), (496, 43368), (556, 38688), (624, 34472), (744, 28912), (806, 26688), (832, 25854), (834, 25792), (992, 21684), (1112, 19344), (1209, 17792), (1248, 17236), (1488, 14456), (1612, 13344), (1664, 12927), (1668, 12896), (1807, 11904), (1984, 10842), (2224, 9672), (2418, 8896), (2496, 8618), (2976, 7228), (3224, 6672), (3336, 6448), (3614, 5952), (3968, 5421), (4309, 4992), (4448, 4836)]