28680820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{587}}^1$

素因数の和:952

約数の個数: 48

約数和(自身を含む): 69148800

約数和(自身を除く): 40467980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 349, 587, 698, 1174, 1396, 1745, 2348, 2443, 2935, 3490, 4109, 4886, 5870, 6980, 8218, 9772, 11740, 12215, 16436, 20545, 24430, 41090, 48860, 82180, 204863, 409726, 819452, 1024315, 1434041, 2048630, 2868082, 4097260, 5736164, 7170205, 14340410, 28680820]

約数ペア:

[(1, 28680820), (2, 14340410), (4, 7170205), (5, 5736164), (7, 4097260), (10, 2868082), (14, 2048630), (20, 1434041), (28, 1024315), (35, 819452), (70, 409726), (140, 204863), (349, 82180), (587, 48860), (698, 41090), (1174, 24430), (1396, 20545), (1745, 16436), (2348, 12215), (2443, 11740), (2935, 9772), (3490, 8218), (4109, 6980), (4886, 5870)]