30939020

素因数分解:

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

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 74661888

約数和(自身を除く): 43722868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 991, 1115, 1561, 1982, 2230, 3122, 3964, 4460, 4955, 6244, 6937, 7805, 9910, 13874, 15610, 19820, 27748, 31220, 34685, 69370, 138740, 220993, 441986, 883972, 1104965, 1546951, 2209930, 3093902, 4419860, 6187804, 7734755, 15469510, 30939020]

約数ペア:

[(1, 30939020), (2, 15469510), (4, 7734755), (5, 6187804), (7, 4419860), (10, 3093902), (14, 2209930), (20, 1546951), (28, 1104965), (35, 883972), (70, 441986), (140, 220993), (223, 138740), (446, 69370), (892, 34685), (991, 31220), (1115, 27748), (1561, 19820), (1982, 15610), (2230, 13874), (3122, 9910), (3964, 7805), (4460, 6937), (4955, 6244)]