21427790

素因数分解:

$2^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{3847}}^1$

素因数の和:4411

約数の個数: 16

約数和(自身を含む): 38649312

約数和(自身を除く): 17221522

約数列:

[1, 2, 5, 10, 557, 1114, 2785, 3847, 5570, 7694, 19235, 38470, 2142779, 4285558, 10713895, 21427790]

約数ペア:

[(1, 21427790), (2, 10713895), (5, 4285558), (10, 2142779), (557, 38470), (1114, 19235), (2785, 7694), (3847, 5570)]