28790328

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{419}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 82656000

約数和(自身を除く): 53865672

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 409, 419, 818, 838, 1227, 1257, 1636, 1676, 2454, 2514, 2863, 2933, 3272, 3352, 4908, 5028, 5726, 5866, 8589, 8799, 9816, 10056, 11452, 11732, 17178, 17598, 22904, 23464, 34356, 35196, 68712, 70392, 171371, 342742, 514113, 685484, 1028226, 1199597, 1370968, 2056452, 2399194, 3598791, 4112904, 4798388, 7197582, 9596776, 14395164, 28790328]

約数ペア:

[(1, 28790328), (2, 14395164), (3, 9596776), (4, 7197582), (6, 4798388), (7, 4112904), (8, 3598791), (12, 2399194), (14, 2056452), (21, 1370968), (24, 1199597), (28, 1028226), (42, 685484), (56, 514113), (84, 342742), (168, 171371), (409, 70392), (419, 68712), (818, 35196), (838, 34356), (1227, 23464), (1257, 22904), (1636, 17598), (1676, 17178), (2454, 11732), (2514, 11452), (2863, 10056), (2933, 9816), (3272, 8799), (3352, 8589), (4908, 5866), (5028, 5726)]