21000851937

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:207

約数の個数: 168

約数和(自身を含む): 36555865920

約数和(自身を除く): 15555013983

約数列:

[1, 3, 9, 13, 23, 27, 39, 59, 69, 71, 81, 117, 177, 207, 213, 243, 299, 351, 529, 531, 621, 639, 729, 767, 897, 923, 1053, 1357, 1587, 1593, 1633, 1863, 1917, 2301, 2691, 2769, 3159, 4071, 4189, 4761, 4779, 4899, 5589, 5751, 6877, 6903, 8073, 8307, 9477, 12213, 12567, 14283, 14337, 14697, 16767, 17253, 17641, 20631, 20709, 21229, 24219, 24921, 31211, 36639, 37559, 37701, 42849, 43011, 44091, 51759, 52923, 54457, 61893, 62127, 63687, 72657, 74763, 93633, 96347, 109917, 112677, 113103, 128547, 132273, 158769, 163371, 185679, 186381, 191061, 217971, 224289, 280899, 289041, 329751, 338031, 339309, 385641, 396819, 405743, 476307, 488267, 490113, 557037, 559143, 573183, 672867, 842697, 867123, 989253, 1014093, 1017927, 1190457, 1217229, 1252511, 1428921, 1464801, 1470339, 1671111, 1719549, 2215981, 2528091, 2601369, 3042279, 3053781, 3651687, 3757533, 4286763, 4394403, 4411017, 5013333, 5158647, 6647943, 7584273, 7804107, 9126837, 10955061, 11272599, 12860289, 13183209, 13233051, 15475941, 19943829, 22752819, 23412321, 27380511, 28807753, 32865183, 33817797, 39549627, 39699153, 59831487, 70236963, 86423259, 98595549, 101453391, 118648881, 179494461, 259269777, 295786647, 304360173, 355946643, 538483383, 777809331, 913080519, 1615450149, 2333427993, 7000283979, 21000851937]

約数ペア:

[(1, 21000851937), (3, 7000283979), (9, 2333427993), (13, 1615450149), (23, 913080519), (27, 777809331), (39, 538483383), (59, 355946643), (69, 304360173), (71, 295786647), (81, 259269777), (117, 179494461), (177, 118648881), (207, 101453391), (213, 98595549), (243, 86423259), (299, 70236963), (351, 59831487), (529, 39699153), (531, 39549627), (621, 33817797), (639, 32865183), (729, 28807753), (767, 27380511), (897, 23412321), (923, 22752819), (1053, 19943829), (1357, 15475941), (1587, 13233051), (1593, 13183209), (1633, 12860289), (1863, 11272599), (1917, 10955061), (2301, 9126837), (2691, 7804107), (2769, 7584273), (3159, 6647943), (4071, 5158647), (4189, 5013333), (4761, 4411017), (4779, 4394403), (4899, 4286763), (5589, 3757533), (5751, 3651687), (6877, 3053781), (6903, 3042279), (8073, 2601369), (8307, 2528091), (9477, 2215981), (12213, 1719549), (12567, 1671111), (14283, 1470339), (14337, 1464801), (14697, 1428921), (16767, 1252511), (17253, 1217229), (17641, 1190457), (20631, 1017927), (20709, 1014093), (21229, 989253), (24219, 867123), (24921, 842697), (31211, 672867), (36639, 573183), (37559, 559143), (37701, 557037), (42849, 490113), (43011, 488267), (44091, 476307), (51759, 405743), (52923, 396819), (54457, 385641), (61893, 339309), (62127, 338031), (63687, 329751), (72657, 289041), (74763, 280899), (93633, 224289), (96347, 217971), (109917, 191061), (112677, 186381), (113103, 185679), (128547, 163371), (132273, 158769)]