20987946

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{166571}}^1$

素因数の和:166586

約数の個数: 24

約数和(自身を含む): 51970464

約数和(自身を除く): 30982518

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 166571, 333142, 499713, 999426, 1165997, 1499139, 2331994, 2998278, 3497991, 6995982, 10493973, 20987946]

約数ペア:

[(1, 20987946), (2, 10493973), (3, 6995982), (6, 3497991), (7, 2998278), (9, 2331994), (14, 1499139), (18, 1165997), (21, 999426), (42, 499713), (63, 333142), (126, 166571)]