81588400

素因数分解:

$2^4\times 5^2\times {\mathrm{203971}}^1$

素因数の和:203989

約数の個数: 30

約数和(自身を含む): 196017092

約数和(自身を除く): 114428692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 203971, 407942, 815884, 1019855, 1631768, 2039710, 3263536, 4079420, 5099275, 8158840, 10198550, 16317680, 20397100, 40794200, 81588400]

約数ペア:

[(1, 81588400), (2, 40794200), (4, 20397100), (5, 16317680), (8, 10198550), (10, 8158840), (16, 5099275), (20, 4079420), (25, 3263536), (40, 2039710), (50, 1631768), (80, 1019855), (100, 815884), (200, 407942), (400, 203971)]