21004760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75017}}^1$

素因数の和:75035

約数の個数: 32

約数和(自身を含む): 54012960

約数和(自身を除く): 33008200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75017, 150034, 300068, 375085, 525119, 600136, 750170, 1050238, 1500340, 2100476, 2625595, 3000680, 4200952, 5251190, 10502380, 21004760]

約数ペア:

[(1, 21004760), (2, 10502380), (4, 5251190), (5, 4200952), (7, 3000680), (8, 2625595), (10, 2100476), (14, 1500340), (20, 1050238), (28, 750170), (35, 600136), (40, 525119), (56, 375085), (70, 300068), (140, 150034), (280, 75017)]