289731855

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{20747}}^1$

素因数の和:20788

約数の個数: 48

約数和(自身を含む): 567665280

約数和(自身を除く): 277933425

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1995, 2793, 4655, 13965, 20747, 62241, 103735, 145229, 311205, 394193, 435687, 726145, 1016603, 1182579, 1970965, 2178435, 2759351, 3049809, 5083015, 5912895, 8278053, 13796755, 15249045, 19315457, 41390265, 57946371, 96577285, 289731855]

約数ペア:

[(1, 289731855), (3, 96577285), (5, 57946371), (7, 41390265), (15, 19315457), (19, 15249045), (21, 13796755), (35, 8278053), (49, 5912895), (57, 5083015), (95, 3049809), (105, 2759351), (133, 2178435), (147, 1970965), (245, 1182579), (285, 1016603), (399, 726145), (665, 435687), (735, 394193), (931, 311205), (1995, 145229), (2793, 103735), (4655, 62241), (13965, 20747)]