20589037640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1\times {\mathrm{761}}^1$

素因数の和:1255

約数の個数: 128

約数和(自身を含む): 49465382400

約数和(自身を除く): 28876344760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 97, 152, 190, 194, 367, 380, 388, 485, 734, 760, 761, 776, 970, 1468, 1522, 1835, 1843, 1940, 2936, 3044, 3670, 3686, 3805, 3880, 6088, 6973, 7340, 7372, 7610, 9215, 13946, 14459, 14680, 14744, 15220, 18430, 27892, 28918, 30440, 34865, 35599, 36860, 55784, 57836, 69730, 71198, 72295, 73720, 73817, 115672, 139460, 142396, 144590, 147634, 177995, 278920, 279287, 284792, 289180, 295268, 355990, 369085, 558574, 578360, 590536, 676381, 711980, 738170, 1117148, 1352762, 1396435, 1402523, 1423960, 1476340, 2234296, 2705524, 2792870, 2805046, 2952680, 3381905, 5306453, 5411048, 5585740, 5610092, 6763810, 7012615, 10612906, 11171480, 11220184, 13527620, 14025230, 21225812, 26532265, 27055240, 27090839, 28050460, 42451624, 53064530, 54181678, 56100920, 106129060, 108363356, 135454195, 212258120, 216726712, 270908390, 514725941, 541816780, 1029451882, 1083633560, 2058903764, 2573629705, 4117807528, 5147259410, 10294518820, 20589037640]

約数ペア:

[(1, 20589037640), (2, 10294518820), (4, 5147259410), (5, 4117807528), (8, 2573629705), (10, 2058903764), (19, 1083633560), (20, 1029451882), (38, 541816780), (40, 514725941), (76, 270908390), (95, 216726712), (97, 212258120), (152, 135454195), (190, 108363356), (194, 106129060), (367, 56100920), (380, 54181678), (388, 53064530), (485, 42451624), (734, 28050460), (760, 27090839), (761, 27055240), (776, 26532265), (970, 21225812), (1468, 14025230), (1522, 13527620), (1835, 11220184), (1843, 11171480), (1940, 10612906), (2936, 7012615), (3044, 6763810), (3670, 5610092), (3686, 5585740), (3805, 5411048), (3880, 5306453), (6088, 3381905), (6973, 2952680), (7340, 2805046), (7372, 2792870), (7610, 2705524), (9215, 2234296), (13946, 1476340), (14459, 1423960), (14680, 1402523), (14744, 1396435), (15220, 1352762), (18430, 1117148), (27892, 738170), (28918, 711980), (30440, 676381), (34865, 590536), (35599, 578360), (36860, 558574), (55784, 369085), (57836, 355990), (69730, 295268), (71198, 289180), (72295, 284792), (73720, 279287), (73817, 278920), (115672, 177995), (139460, 147634), (142396, 144590)]