20407680

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1181}}^1$

素因数の和:1209

約数の個数: 128

約数和(自身を含む): 72338400

約数和(自身を除く): 51930720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1181, 1440, 1728, 1920, 2160, 2362, 2880, 3456, 3543, 4320, 4724, 5760, 5905, 7086, 8640, 9448, 10629, 11810, 14172, 17280, 17715, 18896, 21258, 23620, 28344, 31887, 35430, 37792, 42516, 47240, 53145, 56688, 63774, 70860, 75584, 85032, 94480, 106290, 113376, 127548, 141720, 151168, 159435, 170064, 188960, 212580, 226752, 255096, 283440, 318870, 340128, 377920, 425160, 453504, 510192, 566880, 637740, 680256, 755840, 850320, 1020384, 1133760, 1275480, 1360512, 1700640, 2040768, 2267520, 2550960, 3401280, 4081536, 5101920, 6802560, 10203840, 20407680]

約数ペア:

[(1, 20407680), (2, 10203840), (3, 6802560), (4, 5101920), (5, 4081536), (6, 3401280), (8, 2550960), (9, 2267520), (10, 2040768), (12, 1700640), (15, 1360512), (16, 1275480), (18, 1133760), (20, 1020384), (24, 850320), (27, 755840), (30, 680256), (32, 637740), (36, 566880), (40, 510192), (45, 453504), (48, 425160), (54, 377920), (60, 340128), (64, 318870), (72, 283440), (80, 255096), (90, 226752), (96, 212580), (108, 188960), (120, 170064), (128, 159435), (135, 151168), (144, 141720), (160, 127548), (180, 113376), (192, 106290), (216, 94480), (240, 85032), (270, 75584), (288, 70860), (320, 63774), (360, 56688), (384, 53145), (432, 47240), (480, 42516), (540, 37792), (576, 35430), (640, 31887), (720, 28344), (864, 23620), (960, 21258), (1080, 18896), (1152, 17715), (1181, 17280), (1440, 14172), (1728, 11810), (1920, 10629), (2160, 9448), (2362, 8640), (2880, 7086), (3456, 5905), (3543, 5760), (4320, 4724)]