21126105

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:116

約数の個数: 144

約数和(自身を含む): 50791104

約数和(自身を除く): 29664999

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 33, 35, 39, 45, 49, 55, 63, 65, 67, 77, 91, 99, 105, 117, 143, 147, 165, 195, 201, 231, 245, 273, 315, 335, 385, 429, 441, 455, 469, 495, 539, 585, 603, 637, 693, 715, 735, 737, 819, 871, 1001, 1005, 1155, 1287, 1365, 1407, 1617, 1911, 2145, 2205, 2211, 2345, 2613, 2695, 3003, 3015, 3185, 3283, 3465, 3685, 4095, 4221, 4355, 4851, 5005, 5159, 5733, 6097, 6435, 6633, 7007, 7035, 7839, 8085, 9009, 9555, 9581, 9849, 11055, 13065, 15015, 15477, 16415, 18291, 21021, 21105, 24255, 25795, 28665, 28743, 29547, 30485, 33165, 35035, 36113, 39195, 42679, 45045, 46431, 47905, 49245, 54873, 63063, 67067, 77385, 86229, 91455, 105105, 108339, 128037, 143715, 147735, 180565, 201201, 213395, 232155, 274365, 315315, 325017, 335335, 384111, 431145, 469469, 541695, 603603, 640185, 1006005, 1408407, 1625085, 1920555, 2347345, 3018015, 4225221, 7042035, 21126105]

約数ペア:

[(1, 21126105), (3, 7042035), (5, 4225221), (7, 3018015), (9, 2347345), (11, 1920555), (13, 1625085), (15, 1408407), (21, 1006005), (33, 640185), (35, 603603), (39, 541695), (45, 469469), (49, 431145), (55, 384111), (63, 335335), (65, 325017), (67, 315315), (77, 274365), (91, 232155), (99, 213395), (105, 201201), (117, 180565), (143, 147735), (147, 143715), (165, 128037), (195, 108339), (201, 105105), (231, 91455), (245, 86229), (273, 77385), (315, 67067), (335, 63063), (385, 54873), (429, 49245), (441, 47905), (455, 46431), (469, 45045), (495, 42679), (539, 39195), (585, 36113), (603, 35035), (637, 33165), (693, 30485), (715, 29547), (735, 28743), (737, 28665), (819, 25795), (871, 24255), (1001, 21105), (1005, 21021), (1155, 18291), (1287, 16415), (1365, 15477), (1407, 15015), (1617, 13065), (1911, 11055), (2145, 9849), (2205, 9581), (2211, 9555), (2345, 9009), (2613, 8085), (2695, 7839), (3003, 7035), (3015, 7007), (3185, 6633), (3283, 6435), (3465, 6097), (3685, 5733), (4095, 5159), (4221, 5005), (4355, 4851)]