20191535

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{223}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 30105600

約数和(自身を除く): 9914065

約数列:

[1, 5, 7, 13, 35, 65, 91, 199, 223, 455, 995, 1115, 1393, 1561, 2587, 2899, 6965, 7805, 12935, 14495, 18109, 20293, 44377, 90545, 101465, 221885, 310639, 576901, 1553195, 2884505, 4038307, 20191535]

約数ペア:

[(1, 20191535), (5, 4038307), (7, 2884505), (13, 1553195), (35, 576901), (65, 310639), (91, 221885), (199, 101465), (223, 90545), (455, 44377), (995, 20293), (1115, 18109), (1393, 14495), (1561, 12935), (2587, 7805), (2899, 6965)]