18935560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9661}}^1$

素因数の和:9686

約数の個数: 48

約数和(自身を含む): 49566060

約数和(自身を除く): 30630500

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9661, 19322, 38644, 48305, 67627, 77288, 96610, 135254, 193220, 270508, 338135, 386440, 473389, 541016, 676270, 946778, 1352540, 1893556, 2366945, 2705080, 3787112, 4733890, 9467780, 18935560]

約数ペア:

[(1, 18935560), (2, 9467780), (4, 4733890), (5, 3787112), (7, 2705080), (8, 2366945), (10, 1893556), (14, 1352540), (20, 946778), (28, 676270), (35, 541016), (40, 473389), (49, 386440), (56, 338135), (70, 270508), (98, 193220), (140, 135254), (196, 96610), (245, 77288), (280, 67627), (392, 48305), (490, 38644), (980, 19322), (1960, 9661)]