19980618

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{475729}}^1$

素因数の和:475741

約数の個数: 16

約数和(自身を含む): 45670080

約数和(自身を除く): 25689462

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 475729, 951458, 1427187, 2854374, 3330103, 6660206, 9990309, 19980618]

約数ペア:

[(1, 19980618), (2, 9990309), (3, 6660206), (6, 3330103), (7, 2854374), (14, 1427187), (21, 951458), (42, 475729)]