20975955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 45760512

約数和(自身を除く): 24784557

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 55, 65, 77, 91, 105, 121, 127, 143, 165, 195, 231, 273, 363, 381, 385, 429, 455, 605, 635, 715, 847, 889, 1001, 1155, 1365, 1397, 1573, 1651, 1815, 1905, 2145, 2541, 2667, 3003, 4191, 4235, 4445, 4719, 4953, 5005, 6985, 7865, 8255, 9779, 11011, 11557, 12705, 13335, 15015, 15367, 18161, 20955, 23595, 24765, 29337, 33033, 34671, 46101, 48895, 54483, 55055, 57785, 76835, 90805, 107569, 127127, 146685, 165165, 173355, 199771, 230505, 272415, 322707, 381381, 537845, 599313, 635635, 998855, 1398397, 1613535, 1906905, 2996565, 4195191, 6991985, 20975955]

約数ペア:

[(1, 20975955), (3, 6991985), (5, 4195191), (7, 2996565), (11, 1906905), (13, 1613535), (15, 1398397), (21, 998855), (33, 635635), (35, 599313), (39, 537845), (55, 381381), (65, 322707), (77, 272415), (91, 230505), (105, 199771), (121, 173355), (127, 165165), (143, 146685), (165, 127127), (195, 107569), (231, 90805), (273, 76835), (363, 57785), (381, 55055), (385, 54483), (429, 48895), (455, 46101), (605, 34671), (635, 33033), (715, 29337), (847, 24765), (889, 23595), (1001, 20955), (1155, 18161), (1365, 15367), (1397, 15015), (1573, 13335), (1651, 12705), (1815, 11557), (1905, 11011), (2145, 9779), (2541, 8255), (2667, 7865), (3003, 6985), (4191, 5005), (4235, 4953), (4445, 4719)]