127942400

素因数分解:

$2^8\times 5^2\times {\mathrm{19991}}^1$

素因数の和:20017

約数の個数: 54

約数和(自身を含む): 316693272

約数和(自身を除く): 188750872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 19991, 39982, 79964, 99955, 159928, 199910, 319856, 399820, 499775, 639712, 799640, 999550, 1279424, 1599280, 1999100, 2558848, 3198560, 3998200, 5117696, 6397120, 7996400, 12794240, 15992800, 25588480, 31985600, 63971200, 127942400]

約数ペア:

[(1, 127942400), (2, 63971200), (4, 31985600), (5, 25588480), (8, 15992800), (10, 12794240), (16, 7996400), (20, 6397120), (25, 5117696), (32, 3998200), (40, 3198560), (50, 2558848), (64, 1999100), (80, 1599280), (100, 1279424), (128, 999550), (160, 799640), (200, 639712), (256, 499775), (320, 399820), (400, 319856), (640, 199910), (800, 159928), (1280, 99955), (1600, 79964), (3200, 39982), (6400, 19991)]