128418520

素因数分解:

$2^3\times 5^1\times {\mathrm{3210463}}^1$

素因数の和:3210474

約数の個数: 16

約数和(自身を含む): 288941760

約数和(自身を除く): 160523240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3210463, 6420926, 12841852, 16052315, 25683704, 32104630, 64209260, 128418520]

約数ペア:

[(1, 128418520), (2, 64209260), (4, 32104630), (5, 25683704), (8, 16052315), (10, 12841852), (20, 6420926), (40, 3210463)]