61878040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{991}}^1$

素因数の和:1232

約数の個数: 64

約数和(自身を含む): 159989760

約数和(自身を除く): 98111720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 223, 280, 446, 892, 991, 1115, 1561, 1784, 1982, 2230, 3122, 3964, 4460, 4955, 6244, 6937, 7805, 7928, 8920, 9910, 12488, 13874, 15610, 19820, 27748, 31220, 34685, 39640, 55496, 62440, 69370, 138740, 220993, 277480, 441986, 883972, 1104965, 1546951, 1767944, 2209930, 3093902, 4419860, 6187804, 7734755, 8839720, 12375608, 15469510, 30939020, 61878040]

約数ペア:

[(1, 61878040), (2, 30939020), (4, 15469510), (5, 12375608), (7, 8839720), (8, 7734755), (10, 6187804), (14, 4419860), (20, 3093902), (28, 2209930), (35, 1767944), (40, 1546951), (56, 1104965), (70, 883972), (140, 441986), (223, 277480), (280, 220993), (446, 138740), (892, 69370), (991, 62440), (1115, 55496), (1561, 39640), (1784, 34685), (1982, 31220), (2230, 27748), (3122, 19820), (3964, 15610), (4460, 13874), (4955, 12488), (6244, 9910), (6937, 8920), (7805, 7928)]