8745940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{349}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 21168000

約数和(自身を除く): 12422060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 349, 358, 698, 716, 895, 1253, 1396, 1745, 1790, 2443, 2506, 3490, 3580, 4886, 5012, 6265, 6980, 9772, 12215, 12530, 24430, 25060, 48860, 62471, 124942, 249884, 312355, 437297, 624710, 874594, 1249420, 1749188, 2186485, 4372970, 8745940]

約数ペア:

[(1, 8745940), (2, 4372970), (4, 2186485), (5, 1749188), (7, 1249420), (10, 874594), (14, 624710), (20, 437297), (28, 312355), (35, 249884), (70, 124942), (140, 62471), (179, 48860), (349, 25060), (358, 24430), (698, 12530), (716, 12215), (895, 9772), (1253, 6980), (1396, 6265), (1745, 5012), (1790, 4886), (2443, 3580), (2506, 3490)]