20154720

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:428

約数の個数: 96

約数和(自身を含む): 64108800

約数和(自身を除く): 43954080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 199, 211, 240, 398, 422, 480, 597, 633, 796, 844, 995, 1055, 1194, 1266, 1592, 1688, 1990, 2110, 2388, 2532, 2985, 3165, 3184, 3376, 3980, 4220, 4776, 5064, 5970, 6330, 6368, 6752, 7960, 8440, 9552, 10128, 11940, 12660, 15920, 16880, 19104, 20256, 23880, 25320, 31840, 33760, 41989, 47760, 50640, 83978, 95520, 101280, 125967, 167956, 209945, 251934, 335912, 419890, 503868, 629835, 671824, 839780, 1007736, 1259670, 1343648, 1679560, 2015472, 2519340, 3359120, 4030944, 5038680, 6718240, 10077360, 20154720]

約数ペア:

[(1, 20154720), (2, 10077360), (3, 6718240), (4, 5038680), (5, 4030944), (6, 3359120), (8, 2519340), (10, 2015472), (12, 1679560), (15, 1343648), (16, 1259670), (20, 1007736), (24, 839780), (30, 671824), (32, 629835), (40, 503868), (48, 419890), (60, 335912), (80, 251934), (96, 209945), (120, 167956), (160, 125967), (199, 101280), (211, 95520), (240, 83978), (398, 50640), (422, 47760), (480, 41989), (597, 33760), (633, 31840), (796, 25320), (844, 23880), (995, 20256), (1055, 19104), (1194, 16880), (1266, 15920), (1592, 12660), (1688, 11940), (1990, 10128), (2110, 9552), (2388, 8440), (2532, 7960), (2985, 6752), (3165, 6368), (3184, 6330), (3376, 5970), (3980, 5064), (4220, 4776)]