19961585

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 28933632

約数和(自身を除く): 8972047

約数列:

[1, 5, 7, 23, 35, 115, 137, 161, 181, 685, 805, 905, 959, 1267, 3151, 4163, 4795, 6335, 15755, 20815, 22057, 24797, 29141, 110285, 123985, 145705, 173579, 570331, 867895, 2851655, 3992317, 19961585]

約数ペア:

[(1, 19961585), (5, 3992317), (7, 2851655), (23, 867895), (35, 570331), (115, 173579), (137, 145705), (161, 123985), (181, 110285), (685, 29141), (805, 24797), (905, 22057), (959, 20815), (1267, 15755), (3151, 6335), (4163, 4795)]