21013790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3373}}^1$

素因数の和:3476

約数の個数: 32

約数和(自身を含む): 43727040

約数和(自身を除く): 22713250

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 3373, 6230, 6746, 16865, 23611, 33730, 47222, 118055, 236110, 300197, 600394, 1500985, 2101379, 3001970, 4202758, 10506895, 21013790]

約数ペア:

[(1, 21013790), (2, 10506895), (5, 4202758), (7, 3001970), (10, 2101379), (14, 1500985), (35, 600394), (70, 300197), (89, 236110), (178, 118055), (445, 47222), (623, 33730), (890, 23611), (1246, 16865), (3115, 6746), (3373, 6230)]