28857920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1028

約数の個数: 112

約数和(自身を含む): 84661248

約数和(自身を除く): 55803328

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 728, 832, 910, 991, 1040, 1120, 1456, 1820, 1982, 2080, 2240, 2912, 3640, 3964, 4160, 4955, 5824, 6937, 7280, 7928, 9910, 12883, 13874, 14560, 15856, 19820, 25766, 27748, 29120, 31712, 34685, 39640, 51532, 55496, 63424, 64415, 69370, 79280, 90181, 103064, 110992, 128830, 138740, 158560, 180362, 206128, 221984, 257660, 277480, 317120, 360724, 412256, 443968, 450905, 515320, 554960, 721448, 824512, 901810, 1030640, 1109920, 1442896, 1803620, 2061280, 2219840, 2885792, 3607240, 4122560, 5771584, 7214480, 14428960, 28857920]

約数ペア:

[(1, 28857920), (2, 14428960), (4, 7214480), (5, 5771584), (7, 4122560), (8, 3607240), (10, 2885792), (13, 2219840), (14, 2061280), (16, 1803620), (20, 1442896), (26, 1109920), (28, 1030640), (32, 901810), (35, 824512), (40, 721448), (52, 554960), (56, 515320), (64, 450905), (65, 443968), (70, 412256), (80, 360724), (91, 317120), (104, 277480), (112, 257660), (130, 221984), (140, 206128), (160, 180362), (182, 158560), (208, 138740), (224, 128830), (260, 110992), (280, 103064), (320, 90181), (364, 79280), (416, 69370), (448, 64415), (455, 63424), (520, 55496), (560, 51532), (728, 39640), (832, 34685), (910, 31712), (991, 29120), (1040, 27748), (1120, 25766), (1456, 19820), (1820, 15856), (1982, 14560), (2080, 13874), (2240, 12883), (2912, 9910), (3640, 7928), (3964, 7280), (4160, 6937), (4955, 5824)]