280339990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{17959}}^1$

素因数の和:18196

約数の個数: 32

約数和(自身を含む): 579317760

約数和(自身を除く): 298977770

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 223, 446, 1115, 1561, 2230, 3122, 7805, 15610, 17959, 35918, 89795, 125713, 179590, 251426, 628565, 1257130, 4004857, 8009714, 20024285, 28033999, 40048570, 56067998, 140169995, 280339990]

約数ペア:

[(1, 280339990), (2, 140169995), (5, 56067998), (7, 40048570), (10, 28033999), (14, 20024285), (35, 8009714), (70, 4004857), (223, 1257130), (446, 628565), (1115, 251426), (1561, 179590), (2230, 125713), (3122, 89795), (7805, 35918), (15610, 17959)]