20165145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 46448640

約数和(自身を除く): 26283495

約数列:

[1, 3, 5, 7, 11, 13, 15, 17, 21, 33, 35, 39, 51, 55, 65, 77, 79, 85, 91, 105, 119, 143, 165, 187, 195, 221, 231, 237, 255, 273, 357, 385, 395, 429, 455, 553, 561, 595, 663, 715, 869, 935, 1001, 1027, 1105, 1155, 1185, 1309, 1343, 1365, 1547, 1659, 1785, 2145, 2431, 2607, 2765, 2805, 3003, 3081, 3315, 3927, 4029, 4345, 4641, 5005, 5135, 6083, 6545, 6715, 7189, 7293, 7735, 8295, 9401, 11297, 12155, 13035, 14773, 15015, 15405, 17017, 17459, 18249, 19635, 20145, 21567, 23205, 28203, 30415, 33891, 35945, 36465, 44319, 47005, 51051, 52377, 56485, 73865, 79079, 85085, 87295, 91245, 103411, 107835, 122213, 141015, 169455, 192049, 221595, 237237, 255255, 261885, 310233, 366639, 395395, 517055, 576147, 611065, 960245, 1186185, 1344343, 1551165, 1833195, 2880735, 4033029, 6721715, 20165145]

約数ペア:

[(1, 20165145), (3, 6721715), (5, 4033029), (7, 2880735), (11, 1833195), (13, 1551165), (15, 1344343), (17, 1186185), (21, 960245), (33, 611065), (35, 576147), (39, 517055), (51, 395395), (55, 366639), (65, 310233), (77, 261885), (79, 255255), (85, 237237), (91, 221595), (105, 192049), (119, 169455), (143, 141015), (165, 122213), (187, 107835), (195, 103411), (221, 91245), (231, 87295), (237, 85085), (255, 79079), (273, 73865), (357, 56485), (385, 52377), (395, 51051), (429, 47005), (455, 44319), (553, 36465), (561, 35945), (595, 33891), (663, 30415), (715, 28203), (869, 23205), (935, 21567), (1001, 20145), (1027, 19635), (1105, 18249), (1155, 17459), (1185, 17017), (1309, 15405), (1343, 15015), (1365, 14773), (1547, 13035), (1659, 12155), (1785, 11297), (2145, 9401), (2431, 8295), (2607, 7735), (2765, 7293), (2805, 7189), (3003, 6715), (3081, 6545), (3315, 6083), (3927, 5135), (4029, 5005), (4345, 4641)]