78321425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 120825600

約数和(自身を除く): 42504175

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 173, 175, 199, 325, 455, 865, 995, 1211, 1393, 2249, 2275, 2587, 4325, 4975, 6055, 6965, 11245, 12935, 15743, 18109, 30275, 34427, 34825, 56225, 64675, 78715, 90545, 172135, 240989, 393575, 447551, 452725, 860675, 1204945, 2237755, 3132857, 6024725, 11188775, 15664285, 78321425]

約数ペア:

[(1, 78321425), (5, 15664285), (7, 11188775), (13, 6024725), (25, 3132857), (35, 2237755), (65, 1204945), (91, 860675), (173, 452725), (175, 447551), (199, 393575), (325, 240989), (455, 172135), (865, 90545), (995, 78715), (1211, 64675), (1393, 56225), (2249, 34825), (2275, 34427), (2587, 30275), (4325, 18109), (4975, 15743), (6055, 12935), (6965, 11245)]