28133105

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 47123496

約数和(自身を除く): 18990391

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 73, 77, 91, 121, 143, 245, 365, 385, 455, 511, 539, 605, 637, 715, 803, 847, 949, 1001, 1573, 2555, 2695, 3185, 3577, 4015, 4235, 4745, 5005, 5621, 5929, 6643, 7007, 7865, 8833, 10439, 11011, 17885, 28105, 29645, 33215, 35035, 39347, 44165, 46501, 52195, 55055, 61831, 73073, 77077, 114829, 196735, 232505, 309155, 365365, 385385, 432817, 511511, 574145, 803803, 2164085, 2557555, 4019015, 5626621, 28133105]

約数ペア:

[(1, 28133105), (5, 5626621), (7, 4019015), (11, 2557555), (13, 2164085), (35, 803803), (49, 574145), (55, 511511), (65, 432817), (73, 385385), (77, 365365), (91, 309155), (121, 232505), (143, 196735), (245, 114829), (365, 77077), (385, 73073), (455, 61831), (511, 55055), (539, 52195), (605, 46501), (637, 44165), (715, 39347), (803, 35035), (847, 33215), (949, 29645), (1001, 28105), (1573, 17885), (2555, 11011), (2695, 10439), (3185, 8833), (3577, 7865), (4015, 7007), (4235, 6643), (4745, 5929), (5005, 5621)]