20857095

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1051}}^1$

素因数の和:1082

約数の個数: 60

約数和(自身を含む): 43533864

約数和(自身を除く): 22676769

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1051, 1323, 2205, 2835, 3153, 3969, 5255, 6615, 7357, 9459, 15765, 19845, 22071, 28377, 36785, 47295, 51499, 66213, 85131, 110355, 141885, 154497, 198639, 257495, 331065, 425655, 463491, 595917, 772485, 993195, 1390473, 2317455, 2979585, 4171419, 6952365, 20857095]

約数ペア:

[(1, 20857095), (3, 6952365), (5, 4171419), (7, 2979585), (9, 2317455), (15, 1390473), (21, 993195), (27, 772485), (35, 595917), (45, 463491), (49, 425655), (63, 331065), (81, 257495), (105, 198639), (135, 154497), (147, 141885), (189, 110355), (245, 85131), (315, 66213), (405, 51499), (441, 47295), (567, 36785), (735, 28377), (945, 22071), (1051, 19845), (1323, 15765), (2205, 9459), (2835, 7357), (3153, 6615), (3969, 5255)]