16978680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:298

約数の個数: 128

約数和(自身を含む): 57600000

約数和(自身を除く): 40621320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 79, 90, 108, 120, 135, 158, 180, 199, 216, 237, 270, 316, 360, 395, 398, 474, 540, 597, 632, 711, 790, 796, 948, 995, 1080, 1185, 1194, 1422, 1580, 1592, 1791, 1896, 1990, 2133, 2370, 2388, 2844, 2985, 3160, 3555, 3582, 3980, 4266, 4740, 4776, 5373, 5688, 5970, 7110, 7164, 7960, 8532, 8955, 9480, 10665, 10746, 11940, 14220, 14328, 15721, 17064, 17910, 21330, 21492, 23880, 26865, 28440, 31442, 35820, 42660, 42984, 47163, 53730, 62884, 71640, 78605, 85320, 94326, 107460, 125768, 141489, 157210, 188652, 214920, 235815, 282978, 314420, 377304, 424467, 471630, 565956, 628840, 707445, 848934, 943260, 1131912, 1414890, 1697868, 1886520, 2122335, 2829780, 3395736, 4244670, 5659560, 8489340, 16978680]

約数ペア:

[(1, 16978680), (2, 8489340), (3, 5659560), (4, 4244670), (5, 3395736), (6, 2829780), (8, 2122335), (9, 1886520), (10, 1697868), (12, 1414890), (15, 1131912), (18, 943260), (20, 848934), (24, 707445), (27, 628840), (30, 565956), (36, 471630), (40, 424467), (45, 377304), (54, 314420), (60, 282978), (72, 235815), (79, 214920), (90, 188652), (108, 157210), (120, 141489), (135, 125768), (158, 107460), (180, 94326), (199, 85320), (216, 78605), (237, 71640), (270, 62884), (316, 53730), (360, 47163), (395, 42984), (398, 42660), (474, 35820), (540, 31442), (597, 28440), (632, 26865), (711, 23880), (790, 21492), (796, 21330), (948, 17910), (995, 17064), (1080, 15721), (1185, 14328), (1194, 14220), (1422, 11940), (1580, 10746), (1592, 10665), (1791, 9480), (1896, 8955), (1990, 8532), (2133, 7960), (2370, 7164), (2388, 7110), (2844, 5970), (2985, 5688), (3160, 5373), (3555, 4776), (3582, 4740), (3980, 4266)]