20756800

素因数分解:

$2^6\times 5^2\times {\mathrm{12973}}^1$

素因数の和:12995

約数の個数: 42

約数和(自身を含む): 51078638

約数和(自身を除く): 30321838

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12973, 25946, 51892, 64865, 103784, 129730, 207568, 259460, 324325, 415136, 518920, 648650, 830272, 1037840, 1297300, 2075680, 2594600, 4151360, 5189200, 10378400, 20756800]

約数ペア:

[(1, 20756800), (2, 10378400), (4, 5189200), (5, 4151360), (8, 2594600), (10, 2075680), (16, 1297300), (20, 1037840), (25, 830272), (32, 648650), (40, 518920), (50, 415136), (64, 324325), (80, 259460), (100, 207568), (160, 129730), (200, 103784), (320, 64865), (400, 51892), (800, 25946), (1600, 12973)]