18992841

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2749}}^1$

素因数の和:2813

約数の個数: 24

約数和(自身を含む): 30096000

約数和(自身を除く): 11103159

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2749, 6909, 8247, 19243, 57729, 129203, 134701, 387609, 404103, 904421, 2713263, 6330947, 18992841]

約数ペア:

[(1, 18992841), (3, 6330947), (7, 2713263), (21, 904421), (47, 404103), (49, 387609), (141, 134701), (147, 129203), (329, 57729), (987, 19243), (2303, 8247), (2749, 6909)]