28205940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67157}}^1$

素因数の和:67176

約数の個数: 48

約数和(自身を含む): 90260352

約数和(自身を除く): 62054412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 67157, 134314, 201471, 268628, 335785, 402942, 470099, 671570, 805884, 940198, 1007355, 1343140, 1410297, 1880396, 2014710, 2350495, 2820594, 4029420, 4700990, 5641188, 7051485, 9401980, 14102970, 28205940]

約数ペア:

[(1, 28205940), (2, 14102970), (3, 9401980), (4, 7051485), (5, 5641188), (6, 4700990), (7, 4029420), (10, 2820594), (12, 2350495), (14, 2014710), (15, 1880396), (20, 1410297), (21, 1343140), (28, 1007355), (30, 940198), (35, 805884), (42, 671570), (60, 470099), (70, 402942), (84, 335785), (105, 268628), (140, 201471), (210, 134314), (420, 67157)]