128897200

素因数分解:

$2^4\times 5^2\times {\mathrm{322243}}^1$

素因数の和:322261

約数の個数: 30

約数和(自身を含む): 309676484

約数和(自身を除く): 180779284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 322243, 644486, 1288972, 1611215, 2577944, 3222430, 5155888, 6444860, 8056075, 12889720, 16112150, 25779440, 32224300, 64448600, 128897200]

約数ペア:

[(1, 128897200), (2, 64448600), (4, 32224300), (5, 25779440), (8, 16112150), (10, 12889720), (16, 8056075), (20, 6444860), (25, 5155888), (40, 3222430), (50, 2577944), (80, 1611215), (100, 1288972), (200, 644486), (400, 322243)]