2221065

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 4807296

約数和(自身を除く): 2586231

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 165, 231, 315, 385, 495, 641, 693, 1155, 1923, 3205, 3465, 4487, 5769, 7051, 9615, 13461, 21153, 22435, 28845, 35255, 40383, 49357, 63459, 67305, 105765, 148071, 201915, 246785, 317295, 444213, 740355, 2221065]

約数ペア:

[(1, 2221065), (3, 740355), (5, 444213), (7, 317295), (9, 246785), (11, 201915), (15, 148071), (21, 105765), (33, 67305), (35, 63459), (45, 49357), (55, 40383), (63, 35255), (77, 28845), (99, 22435), (105, 21153), (165, 13461), (231, 9615), (315, 7051), (385, 5769), (495, 4487), (641, 3465), (693, 3205), (1155, 1923)]