21756735

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 192

約数和(自身を含む): 55157760

約数和(自身を除く): 33401025

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 23, 27, 33, 35, 39, 45, 49, 55, 63, 65, 69, 77, 91, 99, 105, 115, 117, 135, 143, 147, 161, 165, 189, 195, 207, 231, 245, 253, 273, 297, 299, 315, 345, 351, 385, 429, 441, 455, 483, 495, 539, 585, 621, 637, 693, 715, 735, 759, 805, 819, 897, 945, 1001, 1035, 1127, 1155, 1265, 1287, 1323, 1365, 1449, 1485, 1495, 1617, 1755, 1771, 1911, 2079, 2093, 2145, 2205, 2277, 2415, 2457, 2691, 2695, 3003, 3105, 3185, 3289, 3381, 3465, 3795, 3861, 4095, 4347, 4485, 4851, 5005, 5313, 5635, 5733, 6279, 6435, 6615, 6831, 7007, 7245, 8073, 8085, 8855, 9009, 9555, 9867, 10143, 10395, 10465, 11385, 12285, 12397, 13455, 14553, 14651, 15015, 15939, 16445, 16905, 17199, 18837, 19305, 21021, 21735, 23023, 24255, 26565, 27027, 28665, 29601, 30429, 31395, 34155, 35035, 37191, 40365, 43953, 45045, 47817, 49335, 50715, 56511, 61985, 63063, 69069, 72765, 73255, 79695, 85995, 88803, 94185, 105105, 111573, 115115, 131859, 135135, 148005, 152145, 161161, 185955, 189189, 207207, 219765, 239085, 282555, 315315, 334719, 345345, 395577, 444015, 483483, 557865, 621621, 659295, 805805, 945945, 1036035, 1450449, 1673595, 1977885, 2417415, 3108105, 4351347, 7252245, 21756735]

約数ペア:

[(1, 21756735), (3, 7252245), (5, 4351347), (7, 3108105), (9, 2417415), (11, 1977885), (13, 1673595), (15, 1450449), (21, 1036035), (23, 945945), (27, 805805), (33, 659295), (35, 621621), (39, 557865), (45, 483483), (49, 444015), (55, 395577), (63, 345345), (65, 334719), (69, 315315), (77, 282555), (91, 239085), (99, 219765), (105, 207207), (115, 189189), (117, 185955), (135, 161161), (143, 152145), (147, 148005), (161, 135135), (165, 131859), (189, 115115), (195, 111573), (207, 105105), (231, 94185), (245, 88803), (253, 85995), (273, 79695), (297, 73255), (299, 72765), (315, 69069), (345, 63063), (351, 61985), (385, 56511), (429, 50715), (441, 49335), (455, 47817), (483, 45045), (495, 43953), (539, 40365), (585, 37191), (621, 35035), (637, 34155), (693, 31395), (715, 30429), (735, 29601), (759, 28665), (805, 27027), (819, 26565), (897, 24255), (945, 23023), (1001, 21735), (1035, 21021), (1127, 19305), (1155, 18837), (1265, 17199), (1287, 16905), (1323, 16445), (1365, 15939), (1449, 15015), (1485, 14651), (1495, 14553), (1617, 13455), (1755, 12397), (1771, 12285), (1911, 11385), (2079, 10465), (2093, 10395), (2145, 10143), (2205, 9867), (2277, 9555), (2415, 9009), (2457, 8855), (2691, 8085), (2695, 8073), (3003, 7245), (3105, 7007), (3185, 6831), (3289, 6615), (3381, 6435), (3465, 6279), (3795, 5733), (3861, 5635), (4095, 5313), (4347, 5005), (4485, 4851)]