6445840

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:619

約数の個数: 40

約数和(自身を含む): 15099480

約数和(自身を除く): 8653640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 409, 788, 818, 985, 1576, 1636, 1970, 2045, 3152, 3272, 3940, 4090, 6544, 7880, 8180, 15760, 16360, 32720, 80573, 161146, 322292, 402865, 644584, 805730, 1289168, 1611460, 3222920, 6445840]

約数ペア:

[(1, 6445840), (2, 3222920), (4, 1611460), (5, 1289168), (8, 805730), (10, 644584), (16, 402865), (20, 322292), (40, 161146), (80, 80573), (197, 32720), (394, 16360), (409, 15760), (788, 8180), (818, 7880), (985, 6544), (1576, 4090), (1636, 3940), (1970, 3272), (2045, 3152)]