19645843

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 23054080

約数和(自身を除く): 3408237

約数列:

[1, 7, 61, 139, 331, 427, 973, 2317, 8479, 20191, 46009, 59353, 141337, 322063, 2806549, 19645843]

約数ペア:

[(1, 19645843), (7, 2806549), (61, 322063), (139, 141337), (331, 59353), (427, 46009), (973, 20191), (2317, 8479)]