8980120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 21669120

約数和(自身を除く): 12689000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 227, 230, 344, 430, 454, 460, 860, 908, 920, 989, 1135, 1720, 1816, 1978, 2270, 3956, 4540, 4945, 5221, 7912, 9080, 9761, 9890, 10442, 19522, 19780, 20884, 26105, 39044, 39560, 41768, 48805, 52210, 78088, 97610, 104420, 195220, 208840, 224503, 390440, 449006, 898012, 1122515, 1796024, 2245030, 4490060, 8980120]

約数ペア:

[(1, 8980120), (2, 4490060), (4, 2245030), (5, 1796024), (8, 1122515), (10, 898012), (20, 449006), (23, 390440), (40, 224503), (43, 208840), (46, 195220), (86, 104420), (92, 97610), (115, 78088), (172, 52210), (184, 48805), (215, 41768), (227, 39560), (230, 39044), (344, 26105), (430, 20884), (454, 19780), (460, 19522), (860, 10442), (908, 9890), (920, 9761), (989, 9080), (1135, 7912), (1720, 5221), (1816, 4945), (1978, 4540), (2270, 3956)]