19981976

素因数分解:

$2^3\times 7^1\times {\mathrm{356821}}^1$

素因数の和:356834

約数の個数: 16

約数和(自身を含む): 42818640

約数和(自身を除く): 22836664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 356821, 713642, 1427284, 2497747, 2854568, 4995494, 9990988, 19981976]

約数ペア:

[(1, 19981976), (2, 9990988), (4, 4995494), (7, 2854568), (8, 2497747), (14, 1427284), (28, 713642), (56, 356821)]