81718280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{241}}^1$

素因数の和:439

約数の個数: 96

約数和(自身を含む): 216014040

約数和(自身を除く): 134295760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 173, 196, 241, 245, 280, 346, 392, 482, 490, 692, 865, 964, 980, 1205, 1211, 1384, 1687, 1730, 1928, 1960, 2410, 2422, 3374, 3460, 4820, 4844, 6055, 6748, 6920, 8435, 8477, 9640, 9688, 11809, 12110, 13496, 16870, 16954, 23618, 24220, 33740, 33908, 41693, 42385, 47236, 48440, 59045, 67480, 67816, 83386, 84770, 94472, 118090, 166772, 169540, 208465, 236180, 291851, 333544, 339080, 416930, 472360, 583702, 833860, 1167404, 1459255, 1667720, 2042957, 2334808, 2918510, 4085914, 5837020, 8171828, 10214785, 11674040, 16343656, 20429570, 40859140, 81718280]

約数ペア:

[(1, 81718280), (2, 40859140), (4, 20429570), (5, 16343656), (7, 11674040), (8, 10214785), (10, 8171828), (14, 5837020), (20, 4085914), (28, 2918510), (35, 2334808), (40, 2042957), (49, 1667720), (56, 1459255), (70, 1167404), (98, 833860), (140, 583702), (173, 472360), (196, 416930), (241, 339080), (245, 333544), (280, 291851), (346, 236180), (392, 208465), (482, 169540), (490, 166772), (692, 118090), (865, 94472), (964, 84770), (980, 83386), (1205, 67816), (1211, 67480), (1384, 59045), (1687, 48440), (1730, 47236), (1928, 42385), (1960, 41693), (2410, 33908), (2422, 33740), (3374, 24220), (3460, 23618), (4820, 16954), (4844, 16870), (6055, 13496), (6748, 12110), (6920, 11809), (8435, 9688), (8477, 9640)]