18990100225

素因数分解:

$5^2\times {\mathrm{167}}^1\times {\mathrm{211}}^1\times {\mathrm{21557}}^1$

素因数の和:21945

約数の個数: 24

約数和(自身を含む): 23802101568

約数和(自身を除く): 4812001343

約数列:

[1, 5, 25, 167, 211, 835, 1055, 4175, 5275, 21557, 35237, 107785, 176185, 538925, 880925, 3600019, 4548527, 18000095, 22742635, 90000475, 113713175, 759604009, 3798020045, 18990100225]

約数ペア:

[(1, 18990100225), (5, 3798020045), (25, 759604009), (167, 113713175), (211, 90000475), (835, 22742635), (1055, 18000095), (4175, 4548527), (5275, 3600019), (21557, 880925), (35237, 538925), (107785, 176185)]