20641005

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:96

約数の個数: 144

約数和(自身を含む): 48657024

約数和(自身を除く): 28016019

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 23, 33, 35, 37, 45, 49, 55, 63, 69, 77, 99, 105, 111, 115, 147, 161, 165, 185, 207, 231, 245, 253, 259, 315, 333, 345, 385, 407, 441, 483, 495, 539, 555, 693, 735, 759, 777, 805, 851, 1035, 1127, 1155, 1221, 1265, 1295, 1449, 1617, 1665, 1771, 1813, 2035, 2205, 2277, 2331, 2415, 2553, 2695, 2849, 3381, 3465, 3663, 3795, 3885, 4255, 4851, 5313, 5439, 5635, 5957, 6105, 7245, 7659, 8085, 8547, 8855, 9065, 9361, 10143, 11385, 11655, 12397, 12765, 14245, 15939, 16317, 16905, 17871, 18315, 19943, 24255, 25641, 26565, 27195, 28083, 29785, 37191, 38295, 41699, 42735, 46805, 50715, 53613, 59829, 61985, 65527, 79695, 81585, 84249, 89355, 99715, 111573, 125097, 128205, 140415, 179487, 185955, 196581, 208495, 268065, 299145, 327635, 375291, 421245, 458689, 557865, 589743, 625485, 897435, 982905, 1376067, 1876455, 2293445, 2948715, 4128201, 6880335, 20641005]

約数ペア:

[(1, 20641005), (3, 6880335), (5, 4128201), (7, 2948715), (9, 2293445), (11, 1876455), (15, 1376067), (21, 982905), (23, 897435), (33, 625485), (35, 589743), (37, 557865), (45, 458689), (49, 421245), (55, 375291), (63, 327635), (69, 299145), (77, 268065), (99, 208495), (105, 196581), (111, 185955), (115, 179487), (147, 140415), (161, 128205), (165, 125097), (185, 111573), (207, 99715), (231, 89355), (245, 84249), (253, 81585), (259, 79695), (315, 65527), (333, 61985), (345, 59829), (385, 53613), (407, 50715), (441, 46805), (483, 42735), (495, 41699), (539, 38295), (555, 37191), (693, 29785), (735, 28083), (759, 27195), (777, 26565), (805, 25641), (851, 24255), (1035, 19943), (1127, 18315), (1155, 17871), (1221, 16905), (1265, 16317), (1295, 15939), (1449, 14245), (1617, 12765), (1665, 12397), (1771, 11655), (1813, 11385), (2035, 10143), (2205, 9361), (2277, 9065), (2331, 8855), (2415, 8547), (2553, 8085), (2695, 7659), (2849, 7245), (3381, 6105), (3465, 5957), (3663, 5635), (3795, 5439), (3885, 5313), (4255, 4851)]