20215320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 64843200

約数和(自身を除く): 44627880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 37, 40, 58, 60, 74, 87, 111, 116, 120, 145, 148, 157, 174, 185, 222, 232, 290, 296, 314, 348, 370, 435, 444, 471, 555, 580, 628, 696, 740, 785, 870, 888, 942, 1073, 1110, 1160, 1256, 1480, 1570, 1740, 1884, 2146, 2220, 2355, 3140, 3219, 3480, 3768, 4292, 4440, 4553, 4710, 5365, 5809, 6280, 6438, 8584, 9106, 9420, 10730, 11618, 12876, 13659, 16095, 17427, 18212, 18840, 21460, 22765, 23236, 25752, 27318, 29045, 32190, 34854, 36424, 42920, 45530, 46472, 54636, 58090, 64380, 68295, 69708, 87135, 91060, 109272, 116180, 128760, 136590, 139416, 168461, 174270, 182120, 232360, 273180, 336922, 348540, 505383, 546360, 673844, 697080, 842305, 1010766, 1347688, 1684610, 2021532, 2526915, 3369220, 4043064, 5053830, 6738440, 10107660, 20215320]

約数ペア:

[(1, 20215320), (2, 10107660), (3, 6738440), (4, 5053830), (5, 4043064), (6, 3369220), (8, 2526915), (10, 2021532), (12, 1684610), (15, 1347688), (20, 1010766), (24, 842305), (29, 697080), (30, 673844), (37, 546360), (40, 505383), (58, 348540), (60, 336922), (74, 273180), (87, 232360), (111, 182120), (116, 174270), (120, 168461), (145, 139416), (148, 136590), (157, 128760), (174, 116180), (185, 109272), (222, 91060), (232, 87135), (290, 69708), (296, 68295), (314, 64380), (348, 58090), (370, 54636), (435, 46472), (444, 45530), (471, 42920), (555, 36424), (580, 34854), (628, 32190), (696, 29045), (740, 27318), (785, 25752), (870, 23236), (888, 22765), (942, 21460), (1073, 18840), (1110, 18212), (1160, 17427), (1256, 16095), (1480, 13659), (1570, 12876), (1740, 11618), (1884, 10730), (2146, 9420), (2220, 9106), (2355, 8584), (3140, 6438), (3219, 6280), (3480, 5809), (3768, 5365), (4292, 4710), (4440, 4553)]