990227997

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2017}}^1$

素因数の和:2088

約数の個数: 80

約数和(自身を含む): 1758081600

約数和(自身を除く): 767853603

約数列:

[1, 3, 9, 11, 19, 27, 29, 33, 57, 81, 87, 99, 171, 209, 261, 297, 319, 513, 551, 627, 783, 891, 957, 1539, 1653, 1881, 2017, 2349, 2871, 4959, 5643, 6051, 6061, 8613, 14877, 16929, 18153, 18183, 22187, 25839, 38323, 44631, 54459, 54549, 58493, 66561, 114969, 163377, 163647, 175479, 199683, 344907, 421553, 490941, 526437, 599049, 643423, 1034721, 1111367, 1264659, 1579311, 1797147, 1930269, 3104163, 3334101, 3793977, 4737933, 5790807, 10002303, 11381931, 12225037, 17372421, 30006909, 34145793, 36675111, 52117263, 90020727, 110025333, 330075999, 990227997]

約数ペア:

[(1, 990227997), (3, 330075999), (9, 110025333), (11, 90020727), (19, 52117263), (27, 36675111), (29, 34145793), (33, 30006909), (57, 17372421), (81, 12225037), (87, 11381931), (99, 10002303), (171, 5790807), (209, 4737933), (261, 3793977), (297, 3334101), (319, 3104163), (513, 1930269), (551, 1797147), (627, 1579311), (783, 1264659), (891, 1111367), (957, 1034721), (1539, 643423), (1653, 599049), (1881, 526437), (2017, 490941), (2349, 421553), (2871, 344907), (4959, 199683), (5643, 175479), (6051, 163647), (6061, 163377), (8613, 114969), (14877, 66561), (16929, 58493), (18153, 54549), (18183, 54459), (22187, 44631), (25839, 38323)]