21987098

素因数分解:

$2^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{6257}}^1$

素因数の和:6517

約数の個数: 16

約数和(自身を含む): 37848384

約数和(自身を除く): 15861286

約数列:

[1, 2, 7, 14, 251, 502, 1757, 3514, 6257, 12514, 43799, 87598, 1570507, 3141014, 10993549, 21987098]

約数ペア:

[(1, 21987098), (2, 10993549), (7, 3141014), (14, 1570507), (251, 87598), (502, 43799), (1757, 12514), (3514, 6257)]