221425316

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1607}}^1$

素因数の和:1681

約数の個数: 72

約数和(自身を含む): 487609920

約数和(自身を除く): 266184604

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 49, 74, 76, 98, 133, 148, 196, 259, 266, 518, 532, 703, 931, 1036, 1406, 1607, 1813, 1862, 2812, 3214, 3626, 3724, 4921, 6428, 7252, 9842, 11249, 19684, 22498, 30533, 34447, 44996, 59459, 61066, 68894, 78743, 118918, 122132, 137788, 157486, 213731, 237836, 314972, 416213, 427462, 832426, 854924, 1129721, 1496117, 1664852, 2259442, 2913491, 2992234, 4518884, 5826982, 5984468, 7908047, 11653964, 15816094, 31632188, 55356329, 110712658, 221425316]

約数ペア:

[(1, 221425316), (2, 110712658), (4, 55356329), (7, 31632188), (14, 15816094), (19, 11653964), (28, 7908047), (37, 5984468), (38, 5826982), (49, 4518884), (74, 2992234), (76, 2913491), (98, 2259442), (133, 1664852), (148, 1496117), (196, 1129721), (259, 854924), (266, 832426), (518, 427462), (532, 416213), (703, 314972), (931, 237836), (1036, 213731), (1406, 157486), (1607, 137788), (1813, 122132), (1862, 118918), (2812, 78743), (3214, 68894), (3626, 61066), (3724, 59459), (4921, 44996), (6428, 34447), (7252, 30533), (9842, 22498), (11249, 19684)]