15949408040

素因数分解:

$2^3\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{245981}}^1$

素因数の和:247613

約数の個数: 32

約数和(自身を含む): 35908452360

約数和(自身を除く): 19959044320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1621, 3242, 6484, 8105, 12968, 16210, 32420, 64840, 245981, 491962, 983924, 1229905, 1967848, 2459810, 4919620, 9839240, 398735201, 797470402, 1594940804, 1993676005, 3189881608, 3987352010, 7974704020, 15949408040]

約数ペア:

[(1, 15949408040), (2, 7974704020), (4, 3987352010), (5, 3189881608), (8, 1993676005), (10, 1594940804), (20, 797470402), (40, 398735201), (1621, 9839240), (3242, 4919620), (6484, 2459810), (8105, 1967848), (12968, 1229905), (16210, 983924), (32420, 491962), (64840, 245981)]