209218149

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{331}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 353566720

約数和(自身を除く): 144348571

約数列:

[1, 3, 7, 9, 21, 63, 79, 127, 237, 331, 381, 553, 711, 889, 993, 1143, 1659, 2317, 2667, 2979, 4977, 6951, 8001, 10033, 20853, 26149, 30099, 42037, 70231, 78447, 90297, 126111, 183043, 210693, 235341, 294259, 378333, 549129, 632079, 882777, 1647387, 2648331, 3320923, 9962769, 23246461, 29888307, 69739383, 209218149]

約数ペア:

[(1, 209218149), (3, 69739383), (7, 29888307), (9, 23246461), (21, 9962769), (63, 3320923), (79, 2648331), (127, 1647387), (237, 882777), (331, 632079), (381, 549129), (553, 378333), (711, 294259), (889, 235341), (993, 210693), (1143, 183043), (1659, 126111), (2317, 90297), (2667, 78447), (2979, 70231), (4977, 42037), (6951, 30099), (8001, 26149), (10033, 20853)]