161985005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1789}}^1$

素因数の和:2013

約数の個数: 32

約数和(自身を含む): 240576000

約数和(自身を除く): 78590995

約数列:

[1, 5, 7, 13, 35, 65, 91, 199, 455, 995, 1393, 1789, 2587, 6965, 8945, 12523, 12935, 18109, 23257, 62615, 90545, 116285, 162799, 356011, 813995, 1780055, 2492077, 4628143, 12460385, 23140715, 32397001, 161985005]

約数ペア:

[(1, 161985005), (5, 32397001), (7, 23140715), (13, 12460385), (35, 4628143), (65, 2492077), (91, 1780055), (199, 813995), (455, 356011), (995, 162799), (1393, 116285), (1789, 90545), (2587, 62615), (6965, 23257), (8945, 18109), (12523, 12935)]