21309015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 42771456

約数和(自身を除く): 21462441

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 67, 91, 105, 195, 201, 233, 273, 335, 455, 469, 699, 871, 1005, 1165, 1365, 1407, 1631, 2345, 2613, 3029, 3495, 4355, 4893, 6097, 7035, 8155, 9087, 13065, 15145, 15611, 18291, 21203, 24465, 30485, 45435, 46833, 63609, 78055, 91455, 106015, 109277, 202943, 234165, 318045, 327831, 546385, 608829, 1014715, 1420601, 1639155, 3044145, 4261803, 7103005, 21309015]

約数ペア:

[(1, 21309015), (3, 7103005), (5, 4261803), (7, 3044145), (13, 1639155), (15, 1420601), (21, 1014715), (35, 608829), (39, 546385), (65, 327831), (67, 318045), (91, 234165), (105, 202943), (195, 109277), (201, 106015), (233, 91455), (273, 78055), (335, 63609), (455, 46833), (469, 45435), (699, 30485), (871, 24465), (1005, 21203), (1165, 18291), (1365, 15611), (1407, 15145), (1631, 13065), (2345, 9087), (2613, 8155), (3029, 7035), (3495, 6097), (4355, 4893)]