20256990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{51941}}^1$

素因数の和:51964

約数の個数: 32

約数和(自身を含む): 52357536

約数和(自身を除く): 32100546

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 51941, 103882, 155823, 259705, 311646, 519410, 675233, 779115, 1350466, 1558230, 2025699, 3376165, 4051398, 6752330, 10128495, 20256990]

約数ペア:

[(1, 20256990), (2, 10128495), (3, 6752330), (5, 4051398), (6, 3376165), (10, 2025699), (13, 1558230), (15, 1350466), (26, 779115), (30, 675233), (39, 519410), (65, 311646), (78, 259705), (130, 155823), (195, 103882), (390, 51941)]