21087285

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 14163915

約数列:

[1, 3, 5, 15, 31, 93, 101, 155, 303, 449, 465, 505, 1347, 1515, 2245, 3131, 6735, 9393, 13919, 15655, 41757, 45349, 46965, 69595, 136047, 208785, 226745, 680235, 1405819, 4217457, 7029095, 21087285]

約数ペア:

[(1, 21087285), (3, 7029095), (5, 4217457), (15, 1405819), (31, 680235), (93, 226745), (101, 208785), (155, 136047), (303, 69595), (449, 46965), (465, 45349), (505, 41757), (1347, 15655), (1515, 13919), (2245, 9393), (3131, 6735)]