21000605373

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{20549}}^1$

素因数の和:20640

約数の個数: 80

約数和(自身を含む): 36283737600

約数和(自身を除く): 15283132227

約数列:

[1, 3, 9, 11, 27, 31, 33, 37, 81, 93, 99, 111, 279, 297, 333, 341, 407, 837, 891, 999, 1023, 1147, 1221, 2511, 2997, 3069, 3441, 3663, 9207, 10323, 10989, 12617, 20549, 27621, 30969, 32967, 37851, 61647, 92907, 113553, 184941, 226039, 340659, 554823, 637019, 678117, 760313, 1021977, 1664469, 1911057, 2034351, 2280939, 5733171, 6103053, 6842817, 7007209, 8363443, 17199513, 18309159, 20528451, 21021627, 23569703, 25090329, 51598539, 61585353, 63064881, 70709109, 75270987, 189194643, 212127327, 225812961, 259266733, 567583929, 636381981, 677438883, 777800199, 1909145943, 2333400597, 7000201791, 21000605373]

約数ペア:

[(1, 21000605373), (3, 7000201791), (9, 2333400597), (11, 1909145943), (27, 777800199), (31, 677438883), (33, 636381981), (37, 567583929), (81, 259266733), (93, 225812961), (99, 212127327), (111, 189194643), (279, 75270987), (297, 70709109), (333, 63064881), (341, 61585353), (407, 51598539), (837, 25090329), (891, 23569703), (999, 21021627), (1023, 20528451), (1147, 18309159), (1221, 17199513), (2511, 8363443), (2997, 7007209), (3069, 6842817), (3441, 6103053), (3663, 5733171), (9207, 2280939), (10323, 2034351), (10989, 1911057), (12617, 1664469), (20549, 1021977), (27621, 760313), (30969, 678117), (32967, 637019), (37851, 554823), (61647, 340659), (92907, 226039), (113553, 184941)]