15981625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:282

約数の個数: 32

約数和(自身を含む): 22239360

約数和(自身を除く): 6257735

約数列:

[1, 5, 11, 25, 55, 59, 125, 197, 275, 295, 649, 985, 1375, 1475, 2167, 3245, 4925, 7375, 10835, 11623, 16225, 24625, 54175, 58115, 81125, 127853, 270875, 290575, 639265, 1452875, 3196325, 15981625]

約数ペア:

[(1, 15981625), (5, 3196325), (11, 1452875), (25, 639265), (55, 290575), (59, 270875), (125, 127853), (197, 81125), (275, 58115), (295, 54175), (649, 24625), (985, 16225), (1375, 11623), (1475, 10835), (2167, 7375), (3245, 4925)]