20727831537

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{677}}^1$

素因数の和:1039

約数の個数: 96

約数和(自身を含む): 36093118464

約数和(自身を除く): 15365286927

約数列:

[1, 3, 7, 9, 21, 31, 61, 63, 93, 183, 217, 257, 279, 427, 549, 651, 677, 771, 1281, 1799, 1891, 1953, 2031, 2313, 3843, 4739, 5397, 5673, 6093, 7967, 13237, 14217, 15677, 16191, 17019, 20987, 23901, 39711, 41297, 42651, 47031, 55769, 62961, 71703, 109739, 119133, 123891, 141093, 146909, 167307, 173989, 188883, 289079, 329217, 371673, 440727, 485987, 501921, 521967, 867237, 987651, 1217923, 1280207, 1322181, 1457961, 1565901, 2601711, 3401909, 3653769, 3840621, 4373883, 5393659, 8961449, 10205727, 10613329, 10961307, 11521863, 16180977, 26884347, 30617181, 31839987, 37755613, 48542931, 74293303, 80653041, 95519961, 113266839, 222879909, 329013199, 339800517, 668639727, 987039597, 2303092393, 2961118791, 6909277179, 20727831537]

約数ペア:

[(1, 20727831537), (3, 6909277179), (7, 2961118791), (9, 2303092393), (21, 987039597), (31, 668639727), (61, 339800517), (63, 329013199), (93, 222879909), (183, 113266839), (217, 95519961), (257, 80653041), (279, 74293303), (427, 48542931), (549, 37755613), (651, 31839987), (677, 30617181), (771, 26884347), (1281, 16180977), (1799, 11521863), (1891, 10961307), (1953, 10613329), (2031, 10205727), (2313, 8961449), (3843, 5393659), (4739, 4373883), (5397, 3840621), (5673, 3653769), (6093, 3401909), (7967, 2601711), (13237, 1565901), (14217, 1457961), (15677, 1322181), (16191, 1280207), (17019, 1217923), (20987, 987651), (23901, 867237), (39711, 521967), (41297, 501921), (42651, 485987), (47031, 440727), (55769, 371673), (62961, 329217), (71703, 289079), (109739, 188883), (119133, 173989), (123891, 167307), (141093, 146909)]