19984518

素因数分解:

$2^1\times 3^2\times {\mathrm{521}}^1\times {\mathrm{2131}}^1$

素因数の和:2660

約数の個数: 24

約数和(自身を含む): 43403256

約数和(自身を除く): 23418738

約数列:

[1, 2, 3, 6, 9, 18, 521, 1042, 1563, 2131, 3126, 4262, 4689, 6393, 9378, 12786, 19179, 38358, 1110251, 2220502, 3330753, 6661506, 9992259, 19984518]

約数ペア:

[(1, 19984518), (2, 9992259), (3, 6661506), (6, 3330753), (9, 2220502), (18, 1110251), (521, 38358), (1042, 19179), (1563, 12786), (2131, 9378), (3126, 6393), (4262, 4689)]