18330291

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 31948800

約数和(自身を除く): 13618509

約数列:

[1, 3, 7, 9, 21, 29, 63, 79, 87, 127, 203, 237, 261, 381, 553, 609, 711, 889, 1143, 1659, 1827, 2291, 2667, 3683, 4977, 6873, 8001, 10033, 11049, 16037, 20619, 25781, 30099, 33147, 48111, 70231, 77343, 90297, 144333, 210693, 232029, 290957, 632079, 872871, 2036699, 2618613, 6110097, 18330291]

約数ペア:

[(1, 18330291), (3, 6110097), (7, 2618613), (9, 2036699), (21, 872871), (29, 632079), (63, 290957), (79, 232029), (87, 210693), (127, 144333), (203, 90297), (237, 77343), (261, 70231), (381, 48111), (553, 33147), (609, 30099), (711, 25781), (889, 20619), (1143, 16037), (1659, 11049), (1827, 10033), (2291, 8001), (2667, 6873), (3683, 4977)]