19780380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109891}}^1$

素因数の和:109906

約数の個数: 36

約数和(自身を含む): 60001032

約数和(自身を除く): 40220652

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 109891, 219782, 329673, 439564, 549455, 659346, 989019, 1098910, 1318692, 1648365, 1978038, 2197820, 3296730, 3956076, 4945095, 6593460, 9890190, 19780380]

約数ペア:

[(1, 19780380), (2, 9890190), (3, 6593460), (4, 4945095), (5, 3956076), (6, 3296730), (9, 2197820), (10, 1978038), (12, 1648365), (15, 1318692), (18, 1098910), (20, 989019), (30, 659346), (36, 549455), (45, 439564), (60, 329673), (90, 219782), (180, 109891)]