21409199

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{631}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 25360896

約数和(自身を除く): 3951697

約数列:

[1, 7, 37, 131, 259, 631, 917, 4417, 4847, 23347, 33929, 82661, 163429, 578627, 3058457, 21409199]

約数ペア:

[(1, 21409199), (7, 3058457), (37, 578627), (131, 163429), (259, 82661), (631, 33929), (917, 23347), (4417, 4847)]