21040831

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{439}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 24837120

約数和(自身を除く): 3796289

約数列:

[1, 7, 41, 167, 287, 439, 1169, 3073, 6847, 17999, 47929, 73313, 125993, 513191, 3005833, 21040831]

約数ペア:

[(1, 21040831), (7, 3005833), (41, 513191), (167, 125993), (287, 73313), (439, 47929), (1169, 17999), (3073, 6847)]