20804915895

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{607}}^1\times {\mathrm{797}}^1$

素因数の和:1520

約数の個数: 64

約数和(自身を含む): 34653782016

約数和(自身を除く): 13848866121

約数列:

[1, 3, 5, 15, 47, 61, 141, 183, 235, 305, 607, 705, 797, 915, 1821, 2391, 2867, 3035, 3985, 8601, 9105, 11955, 14335, 28529, 37027, 37459, 43005, 48617, 85587, 111081, 112377, 142645, 145851, 185135, 187295, 243085, 427935, 483779, 555405, 561885, 729255, 1451337, 1740269, 2284999, 2418895, 5220807, 6854997, 7256685, 8701345, 11424995, 22737613, 26104035, 29510519, 34274985, 68212839, 88531557, 113688065, 147552595, 341064195, 442657785, 1386994393, 4160983179, 6934971965, 20804915895]

約数ペア:

[(1, 20804915895), (3, 6934971965), (5, 4160983179), (15, 1386994393), (47, 442657785), (61, 341064195), (141, 147552595), (183, 113688065), (235, 88531557), (305, 68212839), (607, 34274985), (705, 29510519), (797, 26104035), (915, 22737613), (1821, 11424995), (2391, 8701345), (2867, 7256685), (3035, 6854997), (3985, 5220807), (8601, 2418895), (9105, 2284999), (11955, 1740269), (14335, 1451337), (28529, 729255), (37027, 561885), (37459, 555405), (43005, 483779), (48617, 427935), (85587, 243085), (111081, 187295), (112377, 185135), (142645, 145851)]