40865920

素因数分解:

$2^7\times 5^1\times {\mathrm{63853}}^1$

素因数の和:63872

約数の個数: 32

約数和(自身を含む): 97696620

約数和(自身を除く): 56830700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 63853, 127706, 255412, 319265, 510824, 638530, 1021648, 1277060, 2043296, 2554120, 4086592, 5108240, 8173184, 10216480, 20432960, 40865920]

約数ペア:

[(1, 40865920), (2, 20432960), (4, 10216480), (5, 8173184), (8, 5108240), (10, 4086592), (16, 2554120), (20, 2043296), (32, 1277060), (40, 1021648), (64, 638530), (80, 510824), (128, 319265), (160, 255412), (320, 127706), (640, 63853)]