20964160

素因数分解:

$2^6\times 5^1\times 7^3\times {\mathrm{191}}^1$

素因数の和:229

約数の個数: 112

約数和(自身を含む): 58521600

約数和(自身を除く): 37557440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 191, 196, 224, 245, 280, 320, 343, 382, 392, 448, 490, 560, 686, 764, 784, 955, 980, 1120, 1337, 1372, 1528, 1568, 1715, 1910, 1960, 2240, 2674, 2744, 3056, 3136, 3430, 3820, 3920, 5348, 5488, 6112, 6685, 6860, 7640, 7840, 9359, 10696, 10976, 12224, 13370, 13720, 15280, 15680, 18718, 21392, 21952, 26740, 27440, 30560, 37436, 42784, 46795, 53480, 54880, 61120, 65513, 74872, 85568, 93590, 106960, 109760, 131026, 149744, 187180, 213920, 262052, 299488, 327565, 374360, 427840, 524104, 598976, 655130, 748720, 1048208, 1310260, 1497440, 2096416, 2620520, 2994880, 4192832, 5241040, 10482080, 20964160]

約数ペア:

[(1, 20964160), (2, 10482080), (4, 5241040), (5, 4192832), (7, 2994880), (8, 2620520), (10, 2096416), (14, 1497440), (16, 1310260), (20, 1048208), (28, 748720), (32, 655130), (35, 598976), (40, 524104), (49, 427840), (56, 374360), (64, 327565), (70, 299488), (80, 262052), (98, 213920), (112, 187180), (140, 149744), (160, 131026), (191, 109760), (196, 106960), (224, 93590), (245, 85568), (280, 74872), (320, 65513), (343, 61120), (382, 54880), (392, 53480), (448, 46795), (490, 42784), (560, 37436), (686, 30560), (764, 27440), (784, 26740), (955, 21952), (980, 21392), (1120, 18718), (1337, 15680), (1372, 15280), (1528, 13720), (1568, 13370), (1715, 12224), (1910, 10976), (1960, 10696), (2240, 9359), (2674, 7840), (2744, 7640), (3056, 6860), (3136, 6685), (3430, 6112), (3820, 5488), (3920, 5348)]