18776660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1889}}^1$

素因数の和:1976

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 26946220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1889, 1988, 2485, 3778, 4970, 7556, 9445, 9940, 13223, 18890, 26446, 37780, 52892, 66115, 132230, 134119, 264460, 268238, 536476, 670595, 938833, 1341190, 1877666, 2682380, 3755332, 4694165, 9388330, 18776660]

約数ペア:

[(1, 18776660), (2, 9388330), (4, 4694165), (5, 3755332), (7, 2682380), (10, 1877666), (14, 1341190), (20, 938833), (28, 670595), (35, 536476), (70, 268238), (71, 264460), (140, 134119), (142, 132230), (284, 66115), (355, 52892), (497, 37780), (710, 26446), (994, 18890), (1420, 13223), (1889, 9940), (1988, 9445), (2485, 7556), (3778, 4970)]