8839720

素因数分解:

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

素因数の和:1225

約数の個数: 32

約数和(自身を含む): 19998720

約数和(自身を除く): 11159000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 991, 1115, 1784, 1982, 2230, 3964, 4460, 4955, 7928, 8920, 9910, 19820, 39640, 220993, 441986, 883972, 1104965, 1767944, 2209930, 4419860, 8839720]

約数ペア:

[(1, 8839720), (2, 4419860), (4, 2209930), (5, 1767944), (8, 1104965), (10, 883972), (20, 441986), (40, 220993), (223, 39640), (446, 19820), (892, 9910), (991, 8920), (1115, 7928), (1784, 4955), (1982, 4460), (2230, 3964)]