8799980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{263}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 21288960

約数和(自身を除く): 12488980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 263, 478, 526, 956, 1052, 1195, 1315, 1673, 1841, 2390, 2630, 3346, 3682, 4780, 5260, 6692, 7364, 8365, 9205, 16730, 18410, 33460, 36820, 62857, 125714, 251428, 314285, 439999, 628570, 879998, 1257140, 1759996, 2199995, 4399990, 8799980]

約数ペア:

[(1, 8799980), (2, 4399990), (4, 2199995), (5, 1759996), (7, 1257140), (10, 879998), (14, 628570), (20, 439999), (28, 314285), (35, 251428), (70, 125714), (140, 62857), (239, 36820), (263, 33460), (478, 18410), (526, 16730), (956, 9205), (1052, 8365), (1195, 7364), (1315, 6692), (1673, 5260), (1841, 4780), (2390, 3682), (2630, 3346)]