20963988

素因数分解:

$2^2\times 3^3\times {\mathrm{389}}^1\times {\mathrm{499}}^1$

素因数の和:901

約数の個数: 48

約数和(自身を含む): 54600000

約数和(自身を除く): 33636012

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 389, 499, 778, 998, 1167, 1497, 1556, 1996, 2334, 2994, 3501, 4491, 4668, 5988, 7002, 8982, 10503, 13473, 14004, 17964, 21006, 26946, 42012, 53892, 194111, 388222, 582333, 776444, 1164666, 1746999, 2329332, 3493998, 5240997, 6987996, 10481994, 20963988]

約数ペア:

[(1, 20963988), (2, 10481994), (3, 6987996), (4, 5240997), (6, 3493998), (9, 2329332), (12, 1746999), (18, 1164666), (27, 776444), (36, 582333), (54, 388222), (108, 194111), (389, 53892), (499, 42012), (778, 26946), (998, 21006), (1167, 17964), (1497, 14004), (1556, 13473), (1996, 10503), (2334, 8982), (2994, 7002), (3501, 5988), (4491, 4668)]