20553715

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 10089485

約数列:

[1, 5, 7, 13, 35, 65, 91, 199, 227, 455, 995, 1135, 1393, 1589, 2587, 2951, 6965, 7945, 12935, 14755, 18109, 20657, 45173, 90545, 103285, 225865, 316211, 587249, 1581055, 2936245, 4110743, 20553715]

約数ペア:

[(1, 20553715), (5, 4110743), (7, 2936245), (13, 1581055), (35, 587249), (65, 316211), (91, 225865), (199, 103285), (227, 90545), (455, 45173), (995, 20657), (1135, 18109), (1393, 14755), (1589, 12935), (2587, 7945), (2951, 6965)]