20013560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10211}}^1$

素因数の和:10236

約数の個数: 48

約数和(自身を含む): 52387560

約数和(自身を除く): 32374000

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, 10211, 20422, 40844, 51055, 71477, 81688, 102110, 142954, 204220, 285908, 357385, 408440, 500339, 571816, 714770, 1000678, 1429540, 2001356, 2501695, 2859080, 4002712, 5003390, 10006780, 20013560]

約数ペア:

[(1, 20013560), (2, 10006780), (4, 5003390), (5, 4002712), (7, 2859080), (8, 2501695), (10, 2001356), (14, 1429540), (20, 1000678), (28, 714770), (35, 571816), (40, 500339), (49, 408440), (56, 357385), (70, 285908), (98, 204220), (140, 142954), (196, 102110), (245, 81688), (280, 71477), (392, 51055), (490, 40844), (980, 20422), (1960, 10211)]