21875382081

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:564

約数の個数: 144

約数和(自身を含む): 39752693760

約数和(自身を除く): 17877311679

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 61, 63, 127, 133, 147, 171, 183, 337, 381, 399, 427, 441, 549, 889, 931, 1011, 1143, 1159, 1197, 1281, 2359, 2413, 2667, 2793, 2989, 3033, 3477, 3843, 6223, 6403, 7077, 7239, 7747, 8001, 8113, 8379, 8967, 10431, 16513, 16891, 18669, 19209, 20557, 21231, 21717, 23241, 24339, 26901, 42799, 44821, 49539, 50673, 54229, 56007, 56791, 57627, 61671, 69723, 73017, 118237, 128397, 134463, 143899, 147193, 148617, 152019, 162687, 170373, 185013, 299593, 313747, 354711, 379603, 385191, 390583, 403389, 431697, 441579, 488061, 511119, 813181, 898779, 941241, 1007293, 1030351, 1064133, 1138809, 1171749, 1295091, 1324737, 2097151, 2439543, 2610739, 2696337, 2734081, 2823723, 3021879, 3091053, 3416427, 3515247, 5692267, 6291453, 7212457, 7318629, 7832217, 8202243, 9065637, 9273159, 17076801, 18275173, 18874359, 19138567, 21637371, 23496651, 24606729, 39845869, 49604041, 51230403, 54825519, 57415701, 64912113, 119537607, 127926211, 148812123, 164476557, 172247103, 347228287, 358612821, 383778633, 446436369, 1041684861, 1151335899, 2430598009, 3125054583, 7291794027, 21875382081]

約数ペア:

[(1, 21875382081), (3, 7291794027), (7, 3125054583), (9, 2430598009), (19, 1151335899), (21, 1041684861), (49, 446436369), (57, 383778633), (61, 358612821), (63, 347228287), (127, 172247103), (133, 164476557), (147, 148812123), (171, 127926211), (183, 119537607), (337, 64912113), (381, 57415701), (399, 54825519), (427, 51230403), (441, 49604041), (549, 39845869), (889, 24606729), (931, 23496651), (1011, 21637371), (1143, 19138567), (1159, 18874359), (1197, 18275173), (1281, 17076801), (2359, 9273159), (2413, 9065637), (2667, 8202243), (2793, 7832217), (2989, 7318629), (3033, 7212457), (3477, 6291453), (3843, 5692267), (6223, 3515247), (6403, 3416427), (7077, 3091053), (7239, 3021879), (7747, 2823723), (8001, 2734081), (8113, 2696337), (8379, 2610739), (8967, 2439543), (10431, 2097151), (16513, 1324737), (16891, 1295091), (18669, 1171749), (19209, 1138809), (20557, 1064133), (21231, 1030351), (21717, 1007293), (23241, 941241), (24339, 898779), (26901, 813181), (42799, 511119), (44821, 488061), (49539, 441579), (50673, 431697), (54229, 403389), (56007, 390583), (56791, 385191), (57627, 379603), (61671, 354711), (69723, 313747), (73017, 299593), (118237, 185013), (128397, 170373), (134463, 162687), (143899, 152019), (147193, 148617)]