20688550

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:313

約数の個数: 48

約数和(自身を含む): 40457232

約数和(自身を除く): 19768682

約数列:

[1, 2, 5, 10, 25, 37, 50, 53, 74, 106, 185, 211, 265, 370, 422, 530, 925, 1055, 1325, 1850, 1961, 2110, 2650, 3922, 5275, 7807, 9805, 10550, 11183, 15614, 19610, 22366, 39035, 49025, 55915, 78070, 98050, 111830, 195175, 279575, 390350, 413771, 559150, 827542, 2068855, 4137710, 10344275, 20688550]

約数ペア:

[(1, 20688550), (2, 10344275), (5, 4137710), (10, 2068855), (25, 827542), (37, 559150), (50, 413771), (53, 390350), (74, 279575), (106, 195175), (185, 111830), (211, 98050), (265, 78070), (370, 55915), (422, 49025), (530, 39035), (925, 22366), (1055, 19610), (1325, 15614), (1850, 11183), (1961, 10550), (2110, 9805), (2650, 7807), (3922, 5275)]