19812940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1033}}^1$

素因数の和:1186

約数の個数: 48

約数和(自身を含む): 47944512

約数和(自身を除く): 28131572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1033, 1370, 1918, 2066, 2740, 3836, 4132, 4795, 5165, 7231, 9590, 10330, 14462, 19180, 20660, 28924, 36155, 72310, 141521, 144620, 283042, 566084, 707605, 990647, 1415210, 1981294, 2830420, 3962588, 4953235, 9906470, 19812940]

約数ペア:

[(1, 19812940), (2, 9906470), (4, 4953235), (5, 3962588), (7, 2830420), (10, 1981294), (14, 1415210), (20, 990647), (28, 707605), (35, 566084), (70, 283042), (137, 144620), (140, 141521), (274, 72310), (548, 36155), (685, 28924), (959, 20660), (1033, 19180), (1370, 14462), (1918, 10330), (2066, 9590), (2740, 7231), (3836, 5165), (4132, 4795)]