19997280

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1543}}^1$

素因数の和:1570

約数の個数: 120

約数和(自身を含む): 70619472

約数和(自身を除く): 50622192

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, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1543, 1620, 2160, 2592, 3086, 3240, 4320, 4629, 6172, 6480, 7715, 9258, 12344, 12960, 13887, 15430, 18516, 23145, 24688, 27774, 30860, 37032, 41661, 46290, 49376, 55548, 61720, 69435, 74064, 83322, 92580, 111096, 123440, 124983, 138870, 148128, 166644, 185160, 208305, 222192, 246880, 249966, 277740, 333288, 370320, 416610, 444384, 499932, 555480, 624915, 666576, 740640, 833220, 999864, 1110960, 1249830, 1333152, 1666440, 1999728, 2221920, 2499660, 3332880, 3999456, 4999320, 6665760, 9998640, 19997280]

約数ペア:

[(1, 19997280), (2, 9998640), (3, 6665760), (4, 4999320), (5, 3999456), (6, 3332880), (8, 2499660), (9, 2221920), (10, 1999728), (12, 1666440), (15, 1333152), (16, 1249830), (18, 1110960), (20, 999864), (24, 833220), (27, 740640), (30, 666576), (32, 624915), (36, 555480), (40, 499932), (45, 444384), (48, 416610), (54, 370320), (60, 333288), (72, 277740), (80, 249966), (81, 246880), (90, 222192), (96, 208305), (108, 185160), (120, 166644), (135, 148128), (144, 138870), (160, 124983), (162, 123440), (180, 111096), (216, 92580), (240, 83322), (270, 74064), (288, 69435), (324, 61720), (360, 55548), (405, 49376), (432, 46290), (480, 41661), (540, 37032), (648, 30860), (720, 27774), (810, 24688), (864, 23145), (1080, 18516), (1296, 15430), (1440, 13887), (1543, 12960), (1620, 12344), (2160, 9258), (2592, 7715), (3086, 6480), (3240, 6172), (4320, 4629)]