21354670

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1583}}^1$

素因数の和:1680

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 19702610

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 1583, 2698, 3166, 6745, 7915, 13490, 15830, 30077, 60154, 112393, 150385, 224786, 300770, 561965, 1123930, 2135467, 4270934, 10677335, 21354670]

約数ペア:

[(1, 21354670), (2, 10677335), (5, 4270934), (10, 2135467), (19, 1123930), (38, 561965), (71, 300770), (95, 224786), (142, 150385), (190, 112393), (355, 60154), (710, 30077), (1349, 15830), (1583, 13490), (2698, 7915), (3166, 6745)]