20797164520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{479}}^1\times {\mathrm{977}}^1$

素因数の和:1579

約数の個数: 128

約数和(自身を含む): 51713510400

約数和(自身を除く): 30916345880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 479, 505, 808, 958, 977, 1010, 1111, 1916, 1954, 2020, 2222, 2395, 3832, 3908, 4040, 4444, 4790, 4885, 5269, 5555, 7816, 8888, 9580, 9770, 10538, 10747, 11110, 19160, 19540, 21076, 21494, 22220, 26345, 39080, 42152, 42988, 44440, 48379, 52690, 53735, 85976, 96758, 98677, 105380, 107470, 193516, 197354, 210760, 214940, 241895, 387032, 394708, 429880, 467983, 483790, 493385, 532169, 789416, 935966, 967580, 986770, 1064338, 1085447, 1871932, 1935160, 1973540, 2128676, 2170894, 2339915, 2660845, 3743864, 3947080, 4257352, 4341788, 4679830, 5147813, 5321690, 5427235, 8683576, 9359660, 10295626, 10643380, 10854470, 18719320, 20591252, 21286760, 21708940, 25739065, 41182504, 43417880, 47266283, 51478130, 94532566, 102956260, 189065132, 205912520, 236331415, 378130264, 472662830, 519929113, 945325660, 1039858226, 1890651320, 2079716452, 2599645565, 4159432904, 5199291130, 10398582260, 20797164520]

約数ペア:

[(1, 20797164520), (2, 10398582260), (4, 5199291130), (5, 4159432904), (8, 2599645565), (10, 2079716452), (11, 1890651320), (20, 1039858226), (22, 945325660), (40, 519929113), (44, 472662830), (55, 378130264), (88, 236331415), (101, 205912520), (110, 189065132), (202, 102956260), (220, 94532566), (404, 51478130), (440, 47266283), (479, 43417880), (505, 41182504), (808, 25739065), (958, 21708940), (977, 21286760), (1010, 20591252), (1111, 18719320), (1916, 10854470), (1954, 10643380), (2020, 10295626), (2222, 9359660), (2395, 8683576), (3832, 5427235), (3908, 5321690), (4040, 5147813), (4444, 4679830), (4790, 4341788), (4885, 4257352), (5269, 3947080), (5555, 3743864), (7816, 2660845), (8888, 2339915), (9580, 2170894), (9770, 2128676), (10538, 1973540), (10747, 1935160), (11110, 1871932), (19160, 1085447), (19540, 1064338), (21076, 986770), (21494, 967580), (22220, 935966), (26345, 789416), (39080, 532169), (42152, 493385), (42988, 483790), (44440, 467983), (48379, 429880), (52690, 394708), (53735, 387032), (85976, 241895), (96758, 214940), (98677, 210760), (105380, 197354), (107470, 193516)]