217397908

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2081}}^1$

素因数の和:2153

約数の個数: 72

約数和(自身を含む): 488462184

約数和(自身を除く): 271064276

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 41, 49, 52, 82, 91, 98, 164, 182, 196, 287, 364, 533, 574, 637, 1066, 1148, 1274, 2009, 2081, 2132, 2548, 3731, 4018, 4162, 7462, 8036, 8324, 14567, 14924, 26117, 27053, 29134, 52234, 54106, 58268, 85321, 101969, 104468, 108212, 170642, 189371, 203938, 341284, 378742, 407876, 597247, 757484, 1109173, 1194494, 1325597, 2218346, 2388988, 2651194, 4180729, 4436692, 5302388, 7764211, 8361458, 15528422, 16722916, 31056844, 54349477, 108698954, 217397908]

約数ペア:

[(1, 217397908), (2, 108698954), (4, 54349477), (7, 31056844), (13, 16722916), (14, 15528422), (26, 8361458), (28, 7764211), (41, 5302388), (49, 4436692), (52, 4180729), (82, 2651194), (91, 2388988), (98, 2218346), (164, 1325597), (182, 1194494), (196, 1109173), (287, 757484), (364, 597247), (533, 407876), (574, 378742), (637, 341284), (1066, 203938), (1148, 189371), (1274, 170642), (2009, 108212), (2081, 104468), (2132, 101969), (2548, 85321), (3731, 58268), (4018, 54106), (4162, 52234), (7462, 29134), (8036, 27053), (8324, 26117), (14567, 14924)]